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Both Windows Kits work.\n\nThe assertions are generated by the UFCS macro.\n","reactions":{"url":"https://api.github.com/repos/hsutter/cppfront/issues/1403/reactions","total_count":4,"+1":4,"-1":0,"laugh":0,"hooray":0,"confused":0,"heart":0,"rocket":0,"eyes":0},"timeline_url":"https://api.github.com/repos/hsutter/cppfront/issues/1403/timeline","performed_via_github_app":null,"state_reason":"not_planned","pinned_comment":null},"comment":{"url":"https://api.github.com/repos/hsutter/cppfront/issues/comments/4940575388","html_url":"https://github.com/hsutter/cppfront/issues/1403#issuecomment-4940575388","issue_url":"https://api.github.com/repos/hsutter/cppfront/issues/1403","id":4940575388,"node_id":"IC_kwDOGEEp088AAAABJnsynA","user":{"login":"hsutter","id":1801526,"node_id":"MDQ6VXNlcjE4MDE1MjY=","avatar_url":"https://avatars.githubusercontent.com/u/1801526?v=4","gravatar_id":"","url":"https://api.github.com/users/hsutter","html_url":"https://github.com/hsutter","followers_url":"https://api.github.com/users/hsutter/followers","following_url":"https://api.github.com/users/hsutter/following{/other_user}","gists_url":"https://api.github.com/users/hsutter/gists{/gist_id}","starred_url":"https://api.github.com/users/hsutter/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/hsutter/subscriptions","organizations_url":"https://api.github.com/users/hsutter/orgs","repos_url":"https://api.github.com/users/hsutter/repos","events_url":"https://api.github.com/users/hsutter/events{/privacy}","received_events_url":"https://api.github.com/users/hsutter/received_events","type":"User","user_view_type":"public","site_admin":false},"created_at":"2026-07-10T23:59:06Z","updated_at":"2026-07-10T23:59:06Z","body":"Thanks for following up!","pin":null,"reactions":{"url":"https://api.github.com/repos/hsutter/cppfront/issues/comments/4940575388/reactions","total_count":0,"+1":0,"-1":0,"laugh":0,"hooray":0,"confused":0,"heart":0,"rocket":0,"eyes":0},"performed_via_github_app":null}},"public":true,"created_at":"2026-07-10T23:59:06Z"},{"id":"14729906799","type":"CreateEvent","actor":{"id":2279724,"login":"sean-parent","display_login":"sean-parent","gravatar_id":"","url":"https://api.github.com/users/sean-parent","avatar_url":"https://avatars.githubusercontent.com/u/2279724?"},"repo":{"id":931828453,"name":"stlab/cel-rs","url":"https://api.github.com/repos/stlab/cel-rs"},"payload":{"ref":"worktree-begin-improvements","ref_type":"branch","full_ref":"refs/heads/worktree-begin-improvements","master_branch":"main","description":"WIP of library for type-safe concatenative 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-0,0 +1,522 @@\n+# `begin`: Surface Forced Cells in the UI Implementation Plan\n+\n+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.\n+\n+**Goal:** Query `property_model::Sheet::is_forced`/`forced_cells` after every `propagate()` in the `begin` demo app, disable Inspector fields for forced cells, highlight forced cells and their producing edge in the D3 graph, and extend the demo source with a conditional relationship that forces a cell.\n+\n+**Architecture:** The Inspector reads `Sheet::is_forced` directly per cell (no new plumbing); the D3 graph gets a new `GraphData::forced: Vec` field populated from `Sheet::forced_cells()`, consumed by `graph.js`/`graph.css` the same way the existing `changed` field drives the pulse animation. The demo source (`DEMO_SOURCE` in `begin/src/app.rs`) gains one cell and one single-method relationship inside an existing conditional branch, so toggling `p` also toggles a forced cell.\n+\n+**Tech Stack:** Rust, Dioxus 0.7 (`begin` crate), `property-model` crate (already exposes `is_forced`/`forced_cells`), D3.js v7 (`begin/assets/graph.js`), plain CSS (`begin/assets/graph.css`).\n+\n+## Global Constraints\n+\n+- `cargo fmt --all` must be run before every commit (enforced by pre-commit hook).\n+- `cargo build --workspace` and `cargo test --workspace` must produce zero compiler warnings.\n+- `cargo clippy --workspace --exclude begin -- -D warnings` and `cargo clippy -p begin --no-default-features -- -D warnings` must both be clean before the branch is considered done.\n+- Every function needs a `///` contract-style doc comment (summary, preconditions/postconditions only where non-obvious, `Complexity` bullet whenever not O(1)).\n+- Unit tests are derived from the contract/public interface only, never from implementation details.\n+- Never commit directly to `main`; this work happens on the `worktree-forced-to-disabled` branch.\n+\n+---\n+\n+### Task 1: `GraphData` reports forced cells\n+\n+**Files:**\n+- Modify: `begin/src/bridge.rs:186-197` (`GraphData` struct), `begin/src/bridge.rs:344-352` (`to_graph_data` tail)\n+- Test: `begin/src/bridge.rs` (`#[cfg(test)] mod tests`, same file)\n+\n+**Interfaces:**\n+- Consumes: `property_model::Sheet::forced_cells(&self) -> impl Iterator + '_` (already implemented in `property-model/src/sheet.rs:692`); the existing private `cell_node_id(id: CellId) -> String` helper in `bridge.rs:199-201`.\n+- Produces: `GraphData::forced: Vec` — stable cell-node IDs (`\"c{ffi}\"`) of cells forced as of the last `propagate()`. Later tasks (Task 3) consume this field by name.\n+\n+- [ ] **Step 1: Write the failing tests**\n+\n+Add to the `#[cfg(test)] mod tests` block at the bottom of `begin/src/bridge.rs` (after the existing `sheet_with_conditional` helper, before its first use):\n+\n+```rust\n+ fn sheet_with_forced_conditional() -> (Sheet, Labels) {\n+ let mut sheet = Sheet::new();\n+ let mut labels = Labels::new();\n+\n+ let a = sheet.add_cell(2.0_f64);\n+ labels.add_cell::(a, \"a\");\n+ let b = sheet.add_cell(0.0_f64);\n+ labels.add_cell::(b, \"b\");\n+ let p = sheet.add_cell(0_i32);\n+ labels.add_cell::(p, \"p\");\n+\n+ let rel = sheet\n+ .add_relationship(vec![Method::from_fn_1_1(a, b, |v: &f64| Ok(*v))])\n+ .unwrap();\n+\n+ sheet\n+ .add_conditional(p, vec![(vec![0_i32], vec![rel])], vec![])\n+ .unwrap();\n+\n+ (sheet, labels)\n+ }\n+\n+ #[test]\n+ fn to_graph_data_forced_field_contains_forced_cell() {\n+ let (mut sheet, labels) = sheet_with_forced_conditional();\n+ sheet.propagate().unwrap();\n+\n+ let b_id = sheet\n+ .cells()\n+ .find(|&id| labels.cells.get(&id).map(|m| m.label.as_str()) == Some(\"b\"))\n+ .unwrap();\n+\n+ let data = to_graph_data(&sheet, &labels);\n+ assert!(data.forced.contains(&cell_node_id(b_id)));\n+ }\n+\n+ #[test]\n+ fn to_graph_data_forced_field_excludes_cell_when_branch_inactive() {\n+ let (mut sheet, labels) = sheet_with_forced_conditional();\n+ let p_id = sheet\n+ .cells()\n+ .find(|&id| labels.cells.get(&id).map(|m| m.label.as_str()) == Some(\"p\"))\n+ .unwrap();\n+ sheet.write(p_id, 1_i32).unwrap();\n+ sheet.propagate().unwrap();\n+\n+ let b_id = sheet\n+ .cells()\n+ .find(|&id| labels.cells.get(&id).map(|m| m.label.as_str()) == Some(\"b\"))\n+ .unwrap();\n+\n+ let data = to_graph_data(&sheet, &labels);\n+ assert!(!data.forced.contains(&cell_node_id(b_id)));\n+ }\n+```\n+\n+- [ ] **Step 2: Run the tests to verify they fail**\n+\n+Run: `cargo test -p begin --no-default-features to_graph_data_forced_field`\n+Expected: compile error — `no field \\`forced\\` on type \\`GraphData\\`` (the struct literal at the end of `to_graph_data` doesn't build one yet, and the test reads `data.forced`).\n+\n+- [ ] **Step 3: Add the `forced` field and populate it**\n+\n+In `begin/src/bridge.rs`, add a field to `GraphData` (after the existing `changed` field, `bridge.rs:192-193`):\n+\n+```rust\n+ /// Stable IDs of cells that changed during the last `propagate()` call.\n+ pub changed: Vec,\n+ /// Stable IDs of cells forced by an active relationship (see\n+ /// [`property_model::Sheet::is_forced`]); consumers should disable input for these\n+ /// cells and may render them distinctly.\n+ pub forced: Vec,\n+```\n+\n+At the tail of `to_graph_data` (`bridge.rs:344-352`), populate it alongside `changed`:\n+\n+```rust\n+ let changed = sheet.changed().map(cell_node_id).collect();\n+ let forced = sheet.forced_cells().map(cell_node_id).collect();\n+\n+ GraphData {\n+ nodes,\n+ links,\n+ changed,\n+ forced,\n+ arrows,\n+ }\n+```\n+\n+- [ ] **Step 4: Run the tests to verify they pass**\n+\n+Run: `cargo test -p begin --no-default-features to_graph_data_forced_field`\n+Expected: PASS (2 passed)\n+\n+Run: `cargo test -p begin --no-default-features`\n+Expected: all existing `bridge.rs` tests still pass (the new field doesn't change any existing assertion, since none of them check `GraphData`'s field set directly except `to_graph_data_no_groups_field`, which only asserts the JSON doesn't contain `\"groups\"` — unaffected by adding `forced`).\n+\n+- [ ] **Step 5: Commit**\n+\n+```bash\n+git add begin/src/bridge.rs\n+git commit -m \"$(cat <<'EOF'\n+feat(begin): report forced cells in GraphData\n+\n+GraphData::forced mirrors the existing `changed` field, populated from\n+Sheet::forced_cells(), so graph_view/graph.js can highlight cells (and\n+their producing edge) that an active relationship guarantees will\n+always be overwritten by propagate().\n+\n+Co-Authored-By: Claude Sonnet 5 \n+EOF\n+)\"\n+```\n+\n+---\n+\n+### Task 2: Inspector disables forced fields\n+\n+**Files:**\n+- Modify: `begin/src/spectrum.rs:37-57` (`SpTextfield`)\n+- Modify: `begin/src/inspector.rs:43-95` (`CellRow`)\n+\n+**Interfaces:**\n+- Consumes: `property_model::Sheet::is_forced(&self, id: CellId) -> bool` (already implemented, `property-model/src/sheet.rs:682`).\n+- Produces: `SpTextfield { disabled: bool, .. }` — a new required prop, mapped to the `disabled` boolean attribute. `CellRow` now disables its field whenever the cell is forced. No other task depends on new names from this task.\n+\n+This task has no dedicated Rust unit test: `spectrum.rs` wraps a single custom element with no test infrastructure today (consistent with the rest of the file), and `CellRow`'s wiring is a one-line prop pass-through. Verify by building and, in Task 3's manual check, observing the field actually disable.\n+\n+- [ ] **Step 1: Add the `disabled` prop to `SpTextfield`**\n+\n+In `begin/src/spectrum.rs`, replace the `SpTextfield` component (lines 32-57):\n+\n+```rust\n+/// Single-line text input.\n+///\n+/// Maps to ``. Fires standard DOM `input`, `focus`, and `blur`\n+/// events. Setting `invalid` to `true` renders the SWC error state (red ring\n+/// and `aria-invalid`). Setting `disabled` to `true` renders the SWC disabled\n+/// state and blocks focus/input at the DOM level.\n+#[component]\n+pub fn SpTextfield(\n+ id: String,\n+ value: String,\n+ invalid: bool,\n+ disabled: bool,\n+ oninput: EventHandler,\n+ onfocus: EventHandler,\n+ onblur: EventHandler,\n+) -> Element {\n+ rsx! {\n+ sp-textfield {\n+ \"id\": \"{id}\",\n+ \"value\": \"{value}\",\n+ // Boolean attribute: omit entirely when false; presence = invalid.\n+ \"invalid\": if invalid { \"true\" },\n+ \"disabled\": if disabled { \"true\" },\n+ oninput: move |e| oninput.call(e),\n+ onfocus: move |e| onfocus.call(e),\n+ onblur: move |e| onblur.call(e),\n+ }\n+ }\n+}\n+```\n+\n+- [ ] **Step 2: Wire `CellRow` to disable forced cells**\n+\n+In `begin/src/inspector.rs`, add a memo next to the existing `value` memo (after `inspector.rs:61-68`, before `let mut input = ...` at `inspector.rs:70`):\n+\n+```rust\n+ let forced = use_memo(move || sheet.read().is_forced(id));\n+```\n+\n+Then update the `SpTextfield` call (`inspector.rs:89-95`) to pass it through:\n+\n+```rust\n+ SpTextfield {\n+ id: field_id,\n+ value: input.read().clone(),\n+ invalid: *has_error.read(),\n+ disabled: *forced.read(),\n+ // Dioxus's event serializer only reads event.target.value for\n+ // HTMLInputElement — custom elements (sp-textfield) always give \"\".\n+ // Use dioxus.send() in JS and eval.recv() to read the live value.\n+ oninput: move |_: FormEvent| {\n+```\n+\n+(leave the rest of the `oninput`/`onfocus`/`onblur` block unchanged).\n+\n+- [ ] **Step 3: Build to verify it compiles**\n+\n+Run: `cargo build -p begin --no-default-features`\n+Expected: builds cleanly, no warnings.\n+\n+- [ ] **Step 4: Commit**\n+\n+```bash\n+git add begin/src/spectrum.rs begin/src/inspector.rs\n+git commit -m \"$(cat <<'EOF'\n+feat(begin): disable Inspector fields for forced cells\n+\n+A forced cell's value is always overwritten by an active relationship\n+on the next propagate(), regardless of what the user types, so the\n+field is disabled rather than silently discarding edits.\n+\n+Co-Authored-By: Claude Sonnet 5 \n+EOF\n+)\"\n+```\n+\n+---\n+\n+### Task 3: Graph highlights forced cells and their producing edge\n+\n+**Files:**\n+- Modify: `begin/assets/graph.js:220-251` (near the existing inactive-relationship dimming block, inside `update()`)\n+- Modify: `begin/assets/graph.css:60-63` (end of file)\n+\n+**Interfaces:**\n+- Consumes: `GraphData.forced: Vec` (Task 1) as `data.forced` in JS.\n+- Produces: CSS classes `forced` (on cell ``s) and `forced-edge` (on constraint ``s) — purely visual, no other task depends on these names.\n+\n+- [ ] **Step 1: Build the forced set and toggle CSS classes**\n+\n+In `begin/assets/graph.js`, inside `update()`, immediately after the existing inactive-relationship IIFE (the block ending at line 251, right before the `// NEW: Conditional diamond nodes` comment at line 253), add:\n+\n+```javascript\n+ // Highlight forced cells (see property_model::Sheet::is_forced) and the\n+ // constraint edge that produces each one. Forced cells always belong to a\n+ // currently active relationship, so this never overlaps with the inactive-\n+ // relationship dimming above.\n+ (function () {\n+ var forcedSet = new Set(data.forced || []);\n+ cellLayer.selectAll('rect')\n+ .classed('forced', function (d) { return forcedSet.has(d.id); });\n+ linkLayer.selectAll('line')\n+ .classed('forced-edge', function (d) {\n+ var tgtId = typeof d.target === 'object' ? d.target.id : d.target;\n+ return forcedSet.has(tgtId);\n+ });\n+ }());\n+```\n+\n+- [ ] **Step 2: Add the CSS rules**\n+\n+In `begin/assets/graph.css`, after the existing `.link-control` rule (end of file, lines 60-63), add:\n+\n+```css\n+.node-cell.forced {\n+ stroke: #8e44ad;\n+ stroke-width: 3;\n+}\n+\n+.link.forced-edge {\n+ stroke: #8e44ad;\n+ stroke-width: 3;\n+}\n+```\n+\n+- [ ] **Step 3: Manually verify in the running app**\n+\n+Run: `dx serve --platform desktop` (from the `begin/` directory)\n+Steps:\n+1. Wait for the desktop window to open with the default demo graph.\n+2. In the Inspector, set `p` to `1` and confirm (from Task 4, once applied) `g`'s field becomes disabled and the `g` cell rect plus its incoming edge from the `[c] -> [g]` relationship turn purple with a thicker outline.\n+3. Set `p` back to `0` and confirm `g`'s field re-enables and the highlight disappears.\n+\n+(This step is a manual check, not a `- [ ] Commit` gate on its own — it's re-run at the end of Task 4 once the demo source actually has `g`. Proceed to commit this task's JS/CSS changes now; the end-to-end visual behavior is confirmed once Task 4 lands.)\n+\n+- [ ] **Step 4: Commit**\n+\n+```bash\n+git add begin/assets/graph.js begin/assets/graph.css\n+git commit -m \"$(cat <<'EOF'\n+feat(begin): highlight forced cells and their producing edge in the graph\n+\n+Cells reported by GraphData::forced (see Task 1) get a distinct purple\n+outline, along with the constraint edge that feeds them, so it's\n+visible at a glance which cells can never be edited.\n+\n+Co-Authored-By: Claude Sonnet 5 \n+EOF\n+)\"\n+```\n+\n+---\n+\n+### Task 4: Demo source gains a conditional relationship that forces a cell\n+\n+**Files:**\n+- Modify: `begin/src/app.rs:11-49` (`DEMO_SOURCE` and its doc comment)\n+- Test: `begin/src/app.rs` (new `#[cfg(test)] mod tests` block)\n+\n+**Interfaces:**\n+- Consumes: `property_model::Sheet::is_forced`, `Sheet::write`, `Sheet::propagate`, `Sheet::cells` (all existing); `crate::source_panel::build_sheet` (already imported in `app.rs`).\n+- Produces: `DEMO_SOURCE` now declares a cell named `\"g\"`; no other task depends on this by name, but Task 3's manual verification (Step 3 above) exercises it end-to-end.\n+\n+- [ ] **Step 1: Write the failing tests**\n+\n+Add a new `#[cfg(test)] mod tests` block at the end of `begin/src/app.rs`:\n+\n+```rust\n+#[cfg(test)]\n+mod tests {\n+ use super::*;\n+\n+ #[test]\n+ fn demo_source_g_not_forced_when_p_is_zero() {\n+ let outcome = build_sheet(DEMO_SOURCE);\n+ let (sheet, labels) = outcome.sheet_labels.expect(\"DEMO_SOURCE must build\");\n+ let g_id = sheet\n+ .cells()\n+ .find(|&id| labels.cells.get(&id).map(|m| m.label.as_str()) == Some(\"g\"))\n+ .unwrap();\n+ assert!(!sheet.is_forced(g_id), \"g should not be forced when p == 0\");\n+ }\n+\n+ #[test]\n+ fn demo_source_g_forced_when_p_is_one() {\n+ let outcome = build_sheet(DEMO_SOURCE);\n+ let (mut sheet, labels) = outcome.sheet_labels.expect(\"DEMO_SOURCE must build\");\n+ let p_id = sheet\n+ .cells()\n+ .find(|&id| labels.cells.get(&id).map(|m| m.label.as_str()) == Some(\"p\"))\n+ .unwrap();\n+ let g_id = sheet\n+ .cells()\n+ .find(|&id| labels.cells.get(&id).map(|m| m.label.as_str()) == Some(\"g\"))\n+ .unwrap();\n+\n+ sheet.write(p_id, 1_i32).unwrap();\n+ sheet.propagate().unwrap();\n+\n+ assert!(sheet.is_forced(g_id), \"g should be forced when p == 1\");\n+ }\n+\n+ #[test]\n+ fn demo_source_g_unforced_again_after_p_returns_to_zero() {\n+ let outcome = build_sheet(DEMO_SOURCE);\n+ let (mut sheet, labels) = outcome.sheet_labels.expect(\"DEMO_SOURCE must build\");\n+ let p_id = sheet\n+ .cells()\n+ .find(|&id| labels.cells.get(&id).map(|m| m.label.as_str()) == Some(\"p\"))\n+ .unwrap();\n+ let g_id = sheet\n+ .cells()\n+ .find(|&id| labels.cells.get(&id).map(|m| m.label.as_str()) == Some(\"g\"))\n+ .unwrap();\n+\n+ sheet.write(p_id, 1_i32).unwrap();\n+ sheet.propagate().unwrap();\n+ sheet.write(p_id, 0_i32).unwrap();\n+ sheet.propagate().unwrap();\n+\n+ assert!(!sheet.is_forced(g_id), \"g should not be forced once p == 0 again\");\n+ }\n+}\n+```\n+\n+- [ ] **Step 2: Run the tests to verify they fail**\n+\n+Run: `cargo test -p begin --no-default-features demo_source_g`\n+Expected: FAIL — `called \\`Option::unwrap()\\` on a \\`None\\` value` (no cell named `\"g\"` exists in `DEMO_SOURCE` yet).\n+\n+- [ ] **Step 3: Update `DEMO_SOURCE`**\n+\n+Replace `begin/src/app.rs:11-49` with:\n+\n+```rust\n+/// Default pm-lang source: two independent bidirectional constraint systems\n+/// (`a × b = c` and `d × e = f`) linked by a conditional on `p`.","path":"docs/superpowers/plans/2026-07-09-begin-forced-cells-ui.md","commit_id":"19ffc25bd4404bed6eb3087bd49b275da7e02897","original_commit_id":"54f1eb74bd24a84890f8fb078784834ac5a3ad27","user":{"login":"sean-parent","id":2279724,"node_id":"MDQ6VXNlcjIyNzk3MjQ=","avatar_url":"https://avatars.githubusercontent.com/u/2279724?v=4","gravatar_id":"","url":"https://api.github.com/users/sean-parent","html_url":"https://github.com/sean-parent","followers_url":"https://api.github.com/users/sean-parent/followers","following_url":"https://api.github.com/users/sean-parent/following{/other_user}","gists_url":"https://api.github.com/users/sean-parent/gists{/gist_id}","starred_url":"https://api.github.com/users/sean-parent/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/sean-parent/subscriptions","organizations_url":"https://api.github.com/users/sean-parent/orgs","repos_url":"https://api.github.com/users/sean-parent/repos","events_url":"https://api.github.com/users/sean-parent/events{/privacy}","received_events_url":"https://api.github.com/users/sean-parent/received_events","type":"User","user_view_type":"public","site_admin":false},"body":"Fixed. Covered by the same superseded-during-implementation note added just above this snippet (the doc-comment text in the snippet is now flagged as historical, not 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-0,0 +1,522 @@\n+# `begin`: Surface Forced Cells in the UI Implementation Plan\n+\n+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.\n+\n+**Goal:** Query `property_model::Sheet::is_forced`/`forced_cells` after every `propagate()` in the `begin` demo app, disable Inspector fields for forced cells, highlight forced cells and their producing edge in the D3 graph, and extend the demo source with a conditional relationship that forces a cell.\n+\n+**Architecture:** The Inspector reads `Sheet::is_forced` directly per cell (no new plumbing); the D3 graph gets a new `GraphData::forced: Vec` field populated from `Sheet::forced_cells()`, consumed by `graph.js`/`graph.css` the same way the existing `changed` field drives the pulse animation. The demo source (`DEMO_SOURCE` in `begin/src/app.rs`) gains one cell and one single-method relationship inside an existing conditional branch, so toggling `p` also toggles a forced cell.\n+\n+**Tech Stack:** Rust, Dioxus 0.7 (`begin` crate), `property-model` crate (already exposes `is_forced`/`forced_cells`), D3.js v7 (`begin/assets/graph.js`), plain CSS (`begin/assets/graph.css`).\n+\n+## Global Constraints\n+\n+- `cargo fmt --all` must be run before every commit (enforced by pre-commit hook).\n+- `cargo build --workspace` and `cargo test --workspace` must produce zero compiler warnings.\n+- `cargo clippy --workspace --exclude begin -- -D warnings` and `cargo clippy -p begin --no-default-features -- -D warnings` must both be clean before the branch is considered done.\n+- Every function needs a `///` contract-style doc comment (summary, preconditions/postconditions only where non-obvious, `Complexity` bullet whenever not O(1)).\n+- Unit tests are derived from the contract/public interface only, never from implementation details.\n+- Never commit directly to `main`; this work happens on the `worktree-forced-to-disabled` branch.\n+\n+---\n+\n+### Task 1: `GraphData` reports forced cells\n+\n+**Files:**\n+- Modify: `begin/src/bridge.rs:186-197` (`GraphData` struct), `begin/src/bridge.rs:344-352` (`to_graph_data` tail)\n+- Test: `begin/src/bridge.rs` (`#[cfg(test)] mod tests`, same file)\n+\n+**Interfaces:**\n+- Consumes: `property_model::Sheet::forced_cells(&self) -> impl Iterator + '_` (already implemented in `property-model/src/sheet.rs:692`); the existing private `cell_node_id(id: CellId) -> String` helper in `bridge.rs:199-201`.\n+- Produces: `GraphData::forced: Vec` — stable cell-node IDs (`\"c{ffi}\"`) of cells forced as of the last `propagate()`. Later tasks (Task 3) consume this field by name.\n+\n+- [ ] **Step 1: Write the failing tests**\n+\n+Add to the `#[cfg(test)] mod tests` block at the bottom of `begin/src/bridge.rs` (after the existing `sheet_with_conditional` helper, before its first use):\n+\n+```rust\n+ fn sheet_with_forced_conditional() -> (Sheet, Labels) {\n+ let mut sheet = Sheet::new();\n+ let mut labels = Labels::new();\n+\n+ let a = sheet.add_cell(2.0_f64);\n+ labels.add_cell::(a, \"a\");\n+ let b = sheet.add_cell(0.0_f64);\n+ labels.add_cell::(b, \"b\");\n+ let p = sheet.add_cell(0_i32);\n+ labels.add_cell::(p, \"p\");\n+\n+ let rel = sheet\n+ .add_relationship(vec![Method::from_fn_1_1(a, b, |v: &f64| Ok(*v))])\n+ .unwrap();\n+\n+ sheet\n+ .add_conditional(p, vec![(vec![0_i32], vec![rel])], vec![])\n+ .unwrap();\n+\n+ (sheet, labels)\n+ }\n+\n+ #[test]\n+ fn to_graph_data_forced_field_contains_forced_cell() {\n+ let (mut sheet, labels) = sheet_with_forced_conditional();\n+ sheet.propagate().unwrap();\n+\n+ let b_id = sheet\n+ .cells()\n+ .find(|&id| labels.cells.get(&id).map(|m| m.label.as_str()) == Some(\"b\"))\n+ .unwrap();\n+\n+ let data = to_graph_data(&sheet, &labels);\n+ assert!(data.forced.contains(&cell_node_id(b_id)));\n+ }\n+\n+ #[test]\n+ fn to_graph_data_forced_field_excludes_cell_when_branch_inactive() {\n+ let (mut sheet, labels) = sheet_with_forced_conditional();\n+ let p_id = sheet\n+ .cells()\n+ .find(|&id| labels.cells.get(&id).map(|m| m.label.as_str()) == Some(\"p\"))\n+ .unwrap();\n+ sheet.write(p_id, 1_i32).unwrap();\n+ sheet.propagate().unwrap();\n+\n+ let b_id = sheet\n+ .cells()\n+ .find(|&id| labels.cells.get(&id).map(|m| m.label.as_str()) == Some(\"b\"))\n+ .unwrap();\n+\n+ let data = to_graph_data(&sheet, &labels);\n+ assert!(!data.forced.contains(&cell_node_id(b_id)));\n+ }\n+```\n+\n+- [ ] **Step 2: Run the tests to verify they fail**\n+\n+Run: `cargo test -p begin --no-default-features to_graph_data_forced_field`\n+Expected: compile error — `no field \\`forced\\` on type \\`GraphData\\`` (the struct literal at the end of `to_graph_data` doesn't build one yet, and the test reads `data.forced`).\n+\n+- [ ] **Step 3: Add the `forced` field and populate it**\n+\n+In `begin/src/bridge.rs`, add a field to `GraphData` (after the existing `changed` field, `bridge.rs:192-193`):\n+\n+```rust\n+ /// Stable IDs of cells that changed during the last `propagate()` call.\n+ pub changed: Vec,\n+ /// Stable IDs of cells forced by an active relationship (see\n+ /// [`property_model::Sheet::is_forced`]); consumers should disable input for these\n+ /// cells and may render them distinctly.\n+ pub forced: Vec,\n+```\n+\n+At the tail of `to_graph_data` (`bridge.rs:344-352`), populate it alongside `changed`:\n+\n+```rust\n+ let changed = sheet.changed().map(cell_node_id).collect();\n+ let forced = sheet.forced_cells().map(cell_node_id).collect();\n+\n+ GraphData {\n+ nodes,\n+ links,\n+ changed,\n+ forced,\n+ arrows,\n+ }\n+```\n+\n+- [ ] **Step 4: Run the tests to verify they pass**\n+\n+Run: `cargo test -p begin --no-default-features to_graph_data_forced_field`\n+Expected: PASS (2 passed)\n+\n+Run: `cargo test -p begin --no-default-features`\n+Expected: all existing `bridge.rs` tests still pass (the new field doesn't change any existing assertion, since none of them check `GraphData`'s field set directly except `to_graph_data_no_groups_field`, which only asserts the JSON doesn't contain `\"groups\"` — unaffected by adding `forced`).\n+\n+- [ ] **Step 5: Commit**\n+\n+```bash\n+git add begin/src/bridge.rs\n+git commit -m \"$(cat <<'EOF'\n+feat(begin): report forced cells in GraphData\n+\n+GraphData::forced mirrors the existing `changed` field, populated from\n+Sheet::forced_cells(), so graph_view/graph.js can highlight cells (and\n+their producing edge) that an active relationship guarantees will\n+always be overwritten by propagate().\n+\n+Co-Authored-By: Claude Sonnet 5 \n+EOF\n+)\"\n+```\n+\n+---\n+\n+### Task 2: Inspector disables forced fields\n+\n+**Files:**\n+- Modify: `begin/src/spectrum.rs:37-57` (`SpTextfield`)\n+- Modify: `begin/src/inspector.rs:43-95` (`CellRow`)\n+\n+**Interfaces:**\n+- Consumes: `property_model::Sheet::is_forced(&self, id: CellId) -> bool` (already implemented, `property-model/src/sheet.rs:682`).\n+- Produces: `SpTextfield { disabled: bool, .. }` — a new required prop, mapped to the `disabled` boolean attribute. `CellRow` now disables its field whenever the cell is forced. No other task depends on new names from this task.\n+\n+This task has no dedicated Rust unit test: `spectrum.rs` wraps a single custom element with no test infrastructure today (consistent with the rest of the file), and `CellRow`'s wiring is a one-line prop pass-through. Verify by building and, in Task 3's manual check, observing the field actually disable.\n+\n+- [ ] **Step 1: Add the `disabled` prop to `SpTextfield`**\n+\n+In `begin/src/spectrum.rs`, replace the `SpTextfield` component (lines 32-57):\n+\n+```rust\n+/// Single-line text input.\n+///\n+/// Maps to ``. Fires standard DOM `input`, `focus`, and `blur`\n+/// events. Setting `invalid` to `true` renders the SWC error state (red ring\n+/// and `aria-invalid`). Setting `disabled` to `true` renders the SWC disabled\n+/// state and blocks focus/input at the DOM level.\n+#[component]\n+pub fn SpTextfield(\n+ id: String,\n+ value: String,\n+ invalid: bool,\n+ disabled: bool,\n+ oninput: EventHandler,\n+ onfocus: EventHandler,\n+ onblur: EventHandler,\n+) -> Element {\n+ rsx! {\n+ sp-textfield {\n+ \"id\": \"{id}\",\n+ \"value\": \"{value}\",\n+ // Boolean attribute: omit entirely when false; presence = invalid.\n+ \"invalid\": if invalid { \"true\" },\n+ \"disabled\": if disabled { \"true\" },\n+ oninput: move |e| oninput.call(e),\n+ onfocus: move |e| onfocus.call(e),\n+ onblur: move |e| onblur.call(e),\n+ }\n+ }\n+}\n+```\n+\n+- [ ] **Step 2: Wire `CellRow` to disable forced cells**\n+\n+In `begin/src/inspector.rs`, add a memo next to the existing `value` memo (after `inspector.rs:61-68`, before `let mut input = ...` at `inspector.rs:70`):\n+\n+```rust\n+ let forced = use_memo(move || sheet.read().is_forced(id));\n+```\n+\n+Then update the `SpTextfield` call (`inspector.rs:89-95`) to pass it through:\n+\n+```rust\n+ SpTextfield {\n+ id: field_id,\n+ value: input.read().clone(),\n+ invalid: *has_error.read(),\n+ disabled: *forced.read(),\n+ // Dioxus's event serializer only reads event.target.value for\n+ // HTMLInputElement — custom elements (sp-textfield) always give \"\".\n+ // Use dioxus.send() in JS and eval.recv() to read the live value.\n+ oninput: move |_: FormEvent| {\n+```\n+\n+(leave the rest of the `oninput`/`onfocus`/`onblur` block unchanged).\n+\n+- [ ] **Step 3: Build to verify it compiles**\n+\n+Run: `cargo build -p begin --no-default-features`\n+Expected: builds cleanly, no warnings.\n+\n+- [ ] **Step 4: Commit**\n+\n+```bash\n+git add begin/src/spectrum.rs begin/src/inspector.rs\n+git commit -m \"$(cat <<'EOF'\n+feat(begin): disable Inspector fields for forced cells\n+\n+A forced cell's value is always overwritten by an active relationship\n+on the next propagate(), regardless of what the user types, so the\n+field is disabled rather than silently discarding edits.\n+\n+Co-Authored-By: Claude Sonnet 5 \n+EOF\n+)\"\n+```\n+\n+---\n+\n+### Task 3: Graph highlights forced cells and their producing edge\n+\n+**Files:**\n+- Modify: `begin/assets/graph.js:220-251` (near the existing inactive-relationship dimming block, inside `update()`)\n+- Modify: `begin/assets/graph.css:60-63` (end of file)\n+\n+**Interfaces:**\n+- Consumes: `GraphData.forced: Vec` (Task 1) as `data.forced` in JS.\n+- Produces: CSS classes `forced` (on cell ``s) and `forced-edge` (on constraint ``s) — purely visual, no other task depends on these names.\n+\n+- [ ] **Step 1: Build the forced set and toggle CSS classes**\n+\n+In `begin/assets/graph.js`, inside `update()`, immediately after the existing inactive-relationship IIFE (the block ending at line 251, right before the `// NEW: Conditional diamond nodes` comment at line 253), add:\n+\n+```javascript\n+ // Highlight forced cells (see property_model::Sheet::is_forced) and the\n+ // constraint edge that produces each one. Forced cells always belong to a\n+ // currently active relationship, so this never overlaps with the inactive-\n+ // relationship dimming above.\n+ (function () {\n+ var forcedSet = new Set(data.forced || []);\n+ cellLayer.selectAll('rect')\n+ .classed('forced', function (d) { return forcedSet.has(d.id); });\n+ linkLayer.selectAll('line')\n+ .classed('forced-edge', function (d) {\n+ var tgtId = typeof d.target === 'object' ? d.target.id : d.target;\n+ return forcedSet.has(tgtId);\n+ });\n+ }());\n+```\n+\n+- [ ] **Step 2: Add the CSS rules**\n+\n+In `begin/assets/graph.css`, after the existing `.link-control` rule (end of file, lines 60-63), add:\n+\n+```css\n+.node-cell.forced {\n+ stroke: #8e44ad;\n+ stroke-width: 3;\n+}\n+\n+.link.forced-edge {\n+ stroke: #8e44ad;\n+ stroke-width: 3;\n+}\n+```\n+\n+- [ ] **Step 3: Manually verify in the running app**\n+\n+Run: `dx serve --platform desktop` (from the `begin/` directory)\n+Steps:\n+1. Wait for the desktop window to open with the default demo graph.\n+2. In the Inspector, set `p` to `1` and confirm (from Task 4, once applied) `g`'s field becomes disabled and the `g` cell rect plus its incoming edge from the `[c] -> [g]` relationship turn purple with a thicker outline.\n+3. Set `p` back to `0` and confirm `g`'s field re-enables and the highlight disappears.\n+\n+(This step is a manual check, not a `- [ ] Commit` gate on its own — it's re-run at the end of Task 4 once the demo source actually has `g`. Proceed to commit this task's JS/CSS changes now; the end-to-end visual behavior is confirmed once Task 4 lands.)\n+\n+- [ ] **Step 4: Commit**\n+\n+```bash\n+git add begin/assets/graph.js begin/assets/graph.css\n+git commit -m \"$(cat <<'EOF'\n+feat(begin): highlight forced cells and their producing edge in the graph\n+\n+Cells reported by GraphData::forced (see Task 1) get a distinct purple\n+outline, along with the constraint edge that feeds them, so it's\n+visible at a glance which cells can never be edited.\n+\n+Co-Authored-By: Claude Sonnet 5 \n+EOF\n+)\"\n+```\n+\n+---\n+\n+### Task 4: Demo source gains a conditional relationship that forces a cell\n+\n+**Files:**\n+- Modify: `begin/src/app.rs:11-49` (`DEMO_SOURCE` and its doc comment)\n+- Test: `begin/src/app.rs` (new `#[cfg(test)] mod tests` block)\n+\n+**Interfaces:**\n+- Consumes: `property_model::Sheet::is_forced`, `Sheet::write`, `Sheet::propagate`, `Sheet::cells` (all existing); `crate::source_panel::build_sheet` (already imported in `app.rs`).\n+- Produces: `DEMO_SOURCE` now declares a cell named `\"g\"`; no other task depends on this by name, but Task 3's manual verification (Step 3 above) exercises it end-to-end.\n+\n+- [ ] **Step 1: Write the failing tests**\n+\n+Add a new `#[cfg(test)] mod tests` block at the end of `begin/src/app.rs`:\n+\n+```rust\n+#[cfg(test)]\n+mod tests {\n+ use super::*;\n+\n+ #[test]\n+ fn demo_source_g_not_forced_when_p_is_zero() {\n+ let outcome = build_sheet(DEMO_SOURCE);\n+ let (sheet, labels) = outcome.sheet_labels.expect(\"DEMO_SOURCE must build\");\n+ let g_id = sheet\n+ .cells()\n+ .find(|&id| labels.cells.get(&id).map(|m| m.label.as_str()) == Some(\"g\"))\n+ .unwrap();\n+ assert!(!sheet.is_forced(g_id), \"g should not be forced when p == 0\");\n+ }\n+\n+ #[test]\n+ fn demo_source_g_forced_when_p_is_one() {\n+ let outcome = build_sheet(DEMO_SOURCE);\n+ let (mut sheet, labels) = outcome.sheet_labels.expect(\"DEMO_SOURCE must build\");\n+ let p_id = sheet\n+ .cells()\n+ .find(|&id| labels.cells.get(&id).map(|m| m.label.as_str()) == Some(\"p\"))\n+ .unwrap();\n+ let g_id = sheet\n+ .cells()\n+ .find(|&id| labels.cells.get(&id).map(|m| m.label.as_str()) == Some(\"g\"))\n+ .unwrap();\n+\n+ sheet.write(p_id, 1_i32).unwrap();\n+ sheet.propagate().unwrap();\n+\n+ assert!(sheet.is_forced(g_id), \"g should be forced when p == 1\");\n+ }\n+\n+ #[test]\n+ fn demo_source_g_unforced_again_after_p_returns_to_zero() {\n+ let outcome = build_sheet(DEMO_SOURCE);\n+ let (mut sheet, labels) = outcome.sheet_labels.expect(\"DEMO_SOURCE must build\");\n+ let p_id = sheet\n+ .cells()\n+ .find(|&id| labels.cells.get(&id).map(|m| m.label.as_str()) == Some(\"p\"))\n+ .unwrap();\n+ let g_id = sheet\n+ .cells()\n+ .find(|&id| labels.cells.get(&id).map(|m| m.label.as_str()) == Some(\"g\"))\n+ .unwrap();\n+\n+ sheet.write(p_id, 1_i32).unwrap();\n+ sheet.propagate().unwrap();\n+ sheet.write(p_id, 0_i32).unwrap();\n+ sheet.propagate().unwrap();\n+\n+ assert!(!sheet.is_forced(g_id), \"g should not be forced once p == 0 again\");\n+ }\n+}\n+```\n+\n+- [ ] **Step 2: Run the tests to verify they fail**\n+\n+Run: `cargo test -p begin --no-default-features demo_source_g`\n+Expected: FAIL — `called \\`Option::unwrap()\\` on a \\`None\\` value` (no cell named `\"g\"` exists in `DEMO_SOURCE` yet).\n+\n+- [ ] **Step 3: Update `DEMO_SOURCE`**\n+\n+Replace `begin/src/app.rs:11-49` with:\n+\n+```rust\n+/// Default pm-lang source: two independent bidirectional constraint systems\n+/// (`a × b = c` and `d × e = f`) linked by a conditional on `p`.\n+///\n+/// - `p = 0`: the relationship `c = f` (bidirectional) becomes active.\n+/// - `p = 1`: the relationship `c = f × 2` (bidirectional) becomes active, and a\n+/// single-method relationship `g = c × 10` also becomes active — `g` is *forced*\n+/// while this branch is active (see [`property_model::Sheet::is_forced`]), so its\n+/// Inspector field is disabled and it is highlighted in the graph.\n+/// - Any other `p`: the two systems are independent and `g` is not forced.\n+pub const DEMO_SOURCE: &str = r#\"sheet demo {\n+ cell a: f64 = 2.0;\n+ cell b: f64 = 3.0;\n+ cell c: f64;\n+ cell d: f64 = 4.0;\n+ cell e: f64 = 5.0;\n+ cell f: f64;\n+ cell g: f64;\n+ cell p: i32 = 0;\n+\n+ relationship {\n+ method [a, b] -> [c] { a * b }\n+ method [b, c] -> [a] { c / b }\n+ method [a, c] -> [b] { c / a }\n+ }\n+\n+ relationship {\n+ method [d, e] -> [f] { d * e }\n+ method [e, f] -> [d] { f / e }\n+ method [d, f] -> [e] { f / d }\n+ }\n+\n+ conditional p {\n+ 0i32 => {\n+ method [f] -> [c] { f }\n+ method [c] -> [f] { c }\n+ }\n+ 1i32 => {\n+ method [f] -> [c] { f * 2.0 }\n+ method [c] -> [f] { c / 2.0 }\n+ method [c] -> [g] { c * 10.0 }\n+ }\n+ }\n+}","path":"docs/superpowers/plans/2026-07-09-begin-forced-cells-ui.md","commit_id":"19ffc25bd4404bed6eb3087bd49b275da7e02897","original_commit_id":"54f1eb74bd24a84890f8fb078784834ac5a3ad27","user":{"login":"sean-parent","id":2279724,"node_id":"MDQ6VXNlcjIyNzk3MjQ=","avatar_url":"https://avatars.githubusercontent.com/u/2279724?v=4","gravatar_id":"","url":"https://api.github.com/users/sean-parent","html_url":"https://github.com/sean-parent","followers_url":"https://api.github.com/users/sean-parent/followers","following_url":"https://api.github.com/users/sean-parent/following{/other_user}","gists_url":"https://api.github.com/users/sean-parent/gists{/gist_id}","starred_url":"https://api.github.com/users/sean-parent/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/sean-parent/subscriptions","organizations_url":"https://api.github.com/users/sean-parent/orgs","repos_url":"https://api.github.com/users/sean-parent/repos","events_url":"https://api.github.com/users/sean-parent/events{/privacy}","received_events_url":"https://api.github.com/users/sean-parent/received_events","type":"User","user_view_type":"public","site_admin":false},"body":"Fixed. Added a superseded-during-implementation note before the snippet explaining the shipped code uses a separate conditional p block for g instead of folding it into the existing 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-0,0 +1,522 @@\n+# `begin`: Surface Forced Cells in the UI Implementation Plan\n+\n+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.\n+\n+**Goal:** Query `property_model::Sheet::is_forced`/`forced_cells` after every `propagate()` in the `begin` demo app, disable Inspector fields for forced cells, highlight forced cells and their producing edge in the D3 graph, and extend the demo source with a conditional relationship that forces a cell.\n+\n+**Architecture:** The Inspector reads `Sheet::is_forced` directly per cell (no new plumbing); the D3 graph gets a new `GraphData::forced: Vec` field populated from `Sheet::forced_cells()`, consumed by `graph.js`/`graph.css` the same way the existing `changed` field drives the pulse animation. The demo source (`DEMO_SOURCE` in `begin/src/app.rs`) gains one cell and one single-method relationship inside an existing conditional branch, so toggling `p` also toggles a forced cell.\n+\n+**Tech Stack:** Rust, Dioxus 0.7 (`begin` crate), `property-model` crate (already exposes `is_forced`/`forced_cells`), D3.js v7 (`begin/assets/graph.js`), plain CSS (`begin/assets/graph.css`).\n+\n+## Global Constraints\n+\n+- `cargo fmt --all` must be run before every commit (enforced by pre-commit hook).\n+- `cargo build --workspace` and `cargo test --workspace` must produce zero compiler warnings.\n+- `cargo clippy --workspace --exclude begin -- -D warnings` and `cargo clippy -p begin --no-default-features -- -D warnings` must both be clean before the branch is considered done.\n+- Every function needs a `///` contract-style doc comment (summary, preconditions/postconditions only where non-obvious, `Complexity` bullet whenever not O(1)).\n+- Unit tests are derived from the contract/public interface only, never from implementation details.\n+- Never commit directly to `main`; this work happens on the `worktree-forced-to-disabled` branch.\n+\n+---\n+\n+### Task 1: `GraphData` reports forced cells\n+\n+**Files:**\n+- Modify: `begin/src/bridge.rs:186-197` (`GraphData` struct), `begin/src/bridge.rs:344-352` (`to_graph_data` tail)\n+- Test: `begin/src/bridge.rs` (`#[cfg(test)] mod tests`, same file)\n+\n+**Interfaces:**\n+- Consumes: `property_model::Sheet::forced_cells(&self) -> impl Iterator + '_` (already implemented in `property-model/src/sheet.rs:692`); the existing private `cell_node_id(id: CellId) -> String` helper in `bridge.rs:199-201`.\n+- Produces: `GraphData::forced: Vec` — stable cell-node IDs (`\"c{ffi}\"`) of cells forced as of the last `propagate()`. Later tasks (Task 3) consume this field by name.\n+\n+- [ ] **Step 1: Write the failing tests**\n+\n+Add to the `#[cfg(test)] mod tests` block at the bottom of `begin/src/bridge.rs` (after the existing `sheet_with_conditional` helper, before its first use):\n+\n+```rust\n+ fn sheet_with_forced_conditional() -> (Sheet, Labels) {\n+ let mut sheet = Sheet::new();\n+ let mut labels = Labels::new();\n+\n+ let a = sheet.add_cell(2.0_f64);\n+ labels.add_cell::(a, \"a\");\n+ let b = sheet.add_cell(0.0_f64);\n+ labels.add_cell::(b, \"b\");\n+ let p = sheet.add_cell(0_i32);\n+ labels.add_cell::(p, \"p\");\n+\n+ let rel = sheet\n+ .add_relationship(vec![Method::from_fn_1_1(a, b, |v: &f64| Ok(*v))])\n+ .unwrap();\n+\n+ sheet\n+ .add_conditional(p, vec![(vec![0_i32], vec![rel])], vec![])\n+ .unwrap();\n+\n+ (sheet, labels)\n+ }\n+\n+ #[test]\n+ fn to_graph_data_forced_field_contains_forced_cell() {\n+ let (mut sheet, labels) = sheet_with_forced_conditional();\n+ sheet.propagate().unwrap();\n+\n+ let b_id = sheet\n+ .cells()\n+ .find(|&id| labels.cells.get(&id).map(|m| m.label.as_str()) == Some(\"b\"))\n+ .unwrap();\n+\n+ let data = to_graph_data(&sheet, &labels);\n+ assert!(data.forced.contains(&cell_node_id(b_id)));\n+ }\n+\n+ #[test]\n+ fn to_graph_data_forced_field_excludes_cell_when_branch_inactive() {\n+ let (mut sheet, labels) = sheet_with_forced_conditional();\n+ let p_id = sheet\n+ .cells()\n+ .find(|&id| labels.cells.get(&id).map(|m| m.label.as_str()) == Some(\"p\"))\n+ .unwrap();\n+ sheet.write(p_id, 1_i32).unwrap();\n+ sheet.propagate().unwrap();\n+\n+ let b_id = sheet\n+ .cells()\n+ .find(|&id| labels.cells.get(&id).map(|m| m.label.as_str()) == Some(\"b\"))\n+ .unwrap();\n+\n+ let data = to_graph_data(&sheet, &labels);\n+ assert!(!data.forced.contains(&cell_node_id(b_id)));\n+ }\n+```\n+\n+- [ ] **Step 2: Run the tests to verify they fail**\n+\n+Run: `cargo test -p begin --no-default-features to_graph_data_forced_field`\n+Expected: compile error — `no field \\`forced\\` on type \\`GraphData\\`` (the struct literal at the end of `to_graph_data` doesn't build one yet, and the test reads `data.forced`).\n+\n+- [ ] **Step 3: Add the `forced` field and populate it**\n+\n+In `begin/src/bridge.rs`, add a field to `GraphData` (after the existing `changed` field, `bridge.rs:192-193`):\n+\n+```rust\n+ /// Stable IDs of cells that changed during the last `propagate()` call.\n+ pub changed: Vec,\n+ /// Stable IDs of cells forced by an active relationship (see\n+ /// [`property_model::Sheet::is_forced`]); consumers should disable input for these\n+ /// cells and may render them distinctly.\n+ pub forced: Vec,\n+```\n+\n+At the tail of `to_graph_data` (`bridge.rs:344-352`), populate it alongside `changed`:\n+\n+```rust\n+ let changed = sheet.changed().map(cell_node_id).collect();\n+ let forced = sheet.forced_cells().map(cell_node_id).collect();\n+\n+ GraphData {\n+ nodes,\n+ links,\n+ changed,\n+ forced,\n+ arrows,\n+ }\n+```\n+\n+- [ ] **Step 4: Run the tests to verify they pass**\n+\n+Run: `cargo test -p begin --no-default-features to_graph_data_forced_field`\n+Expected: PASS (2 passed)\n+\n+Run: `cargo test -p begin --no-default-features`\n+Expected: all existing `bridge.rs` tests still pass (the new field doesn't change any existing assertion, since none of them check `GraphData`'s field set directly except `to_graph_data_no_groups_field`, which only asserts the JSON doesn't contain `\"groups\"` — unaffected by adding `forced`).\n+\n+- [ ] **Step 5: Commit**\n+\n+```bash\n+git add begin/src/bridge.rs\n+git commit -m \"$(cat <<'EOF'\n+feat(begin): report forced cells in GraphData\n+\n+GraphData::forced mirrors the existing `changed` field, populated from\n+Sheet::forced_cells(), so graph_view/graph.js can highlight cells (and\n+their producing edge) that an active relationship guarantees will\n+always be overwritten by propagate().\n+\n+Co-Authored-By: Claude Sonnet 5 \n+EOF\n+)\"\n+```\n+\n+---\n+\n+### Task 2: Inspector disables forced fields\n+\n+**Files:**\n+- Modify: `begin/src/spectrum.rs:37-57` (`SpTextfield`)\n+- Modify: `begin/src/inspector.rs:43-95` (`CellRow`)\n+\n+**Interfaces:**\n+- Consumes: `property_model::Sheet::is_forced(&self, id: CellId) -> bool` (already implemented, `property-model/src/sheet.rs:682`).\n+- Produces: `SpTextfield { disabled: bool, .. }` — a new required prop, mapped to the `disabled` boolean attribute. `CellRow` now disables its field whenever the cell is forced. No other task depends on new names from this task.\n+\n+This task has no dedicated Rust unit test: `spectrum.rs` wraps a single custom element with no test infrastructure today (consistent with the rest of the file), and `CellRow`'s wiring is a one-line prop pass-through. Verify by building and, in Task 3's manual check, observing the field actually disable.\n+\n+- [ ] **Step 1: Add the `disabled` prop to `SpTextfield`**\n+\n+In `begin/src/spectrum.rs`, replace the `SpTextfield` component (lines 32-57):\n+\n+```rust\n+/// Single-line text input.\n+///\n+/// Maps to ``. Fires standard DOM `input`, `focus`, and `blur`\n+/// events. Setting `invalid` to `true` renders the SWC error state (red ring\n+/// and `aria-invalid`). Setting `disabled` to `true` renders the SWC disabled\n+/// state and blocks focus/input at the DOM level.\n+#[component]\n+pub fn SpTextfield(\n+ id: String,\n+ value: String,\n+ invalid: bool,\n+ disabled: bool,\n+ oninput: EventHandler,\n+ onfocus: EventHandler,\n+ onblur: EventHandler,\n+) -> Element {\n+ rsx! {\n+ sp-textfield {\n+ \"id\": \"{id}\",\n+ \"value\": \"{value}\",\n+ // Boolean attribute: omit entirely when false; presence = invalid.\n+ \"invalid\": if invalid { \"true\" },\n+ \"disabled\": if disabled { \"true\" },\n+ oninput: move |e| oninput.call(e),\n+ onfocus: move |e| onfocus.call(e),\n+ onblur: move |e| onblur.call(e),\n+ }\n+ }\n+}\n+```\n+\n+- [ ] **Step 2: Wire `CellRow` to disable forced cells**\n+\n+In `begin/src/inspector.rs`, add a memo next to the existing `value` memo (after `inspector.rs:61-68`, before `let mut input = ...` at `inspector.rs:70`):\n+\n+```rust\n+ let forced = use_memo(move || sheet.read().is_forced(id));\n+```\n+\n+Then update the `SpTextfield` call (`inspector.rs:89-95`) to pass it through:\n+\n+```rust\n+ SpTextfield {\n+ id: field_id,\n+ value: input.read().clone(),\n+ invalid: *has_error.read(),\n+ disabled: *forced.read(),\n+ // Dioxus's event serializer only reads event.target.value for\n+ // HTMLInputElement — custom elements (sp-textfield) always give \"\".\n+ // Use dioxus.send() in JS and eval.recv() to read the live value.\n+ oninput: move |_: FormEvent| {\n+```\n+\n+(leave the rest of the `oninput`/`onfocus`/`onblur` block unchanged).\n+\n+- [ ] **Step 3: Build to verify it compiles**\n+\n+Run: `cargo build -p begin --no-default-features`\n+Expected: builds cleanly, no warnings.\n+\n+- [ ] **Step 4: Commit**\n+\n+```bash\n+git add begin/src/spectrum.rs begin/src/inspector.rs\n+git commit -m \"$(cat <<'EOF'\n+feat(begin): disable Inspector fields for forced cells\n+\n+A forced cell's value is always overwritten by an active relationship\n+on the next propagate(), regardless of what the user types, so the\n+field is disabled rather than silently discarding edits.\n+\n+Co-Authored-By: Claude Sonnet 5 \n+EOF\n+)\"\n+```\n+\n+---\n+\n+### Task 3: Graph highlights forced cells and their producing edge\n+\n+**Files:**\n+- Modify: `begin/assets/graph.js:220-251` (near the existing inactive-relationship dimming block, inside `update()`)\n+- Modify: `begin/assets/graph.css:60-63` (end of file)\n+\n+**Interfaces:**\n+- Consumes: `GraphData.forced: Vec` (Task 1) as `data.forced` in JS.\n+- Produces: CSS classes `forced` (on cell ``s) and `forced-edge` (on constraint ``s) — purely visual, no other task depends on these names.\n+\n+- [ ] **Step 1: Build the forced set and toggle CSS classes**\n+\n+In `begin/assets/graph.js`, inside `update()`, immediately after the existing inactive-relationship IIFE (the block ending at line 251, right before the `// NEW: Conditional diamond nodes` comment at line 253), add:\n+\n+```javascript\n+ // Highlight forced cells (see property_model::Sheet::is_forced) and the\n+ // constraint edge that produces each one. Forced cells always belong to a\n+ // currently active relationship, so this never overlaps with the inactive-\n+ // relationship dimming above.\n+ (function () {\n+ var forcedSet = new Set(data.forced || []);\n+ cellLayer.selectAll('rect')\n+ .classed('forced', function (d) { return forcedSet.has(d.id); });\n+ linkLayer.selectAll('line')\n+ .classed('forced-edge', function (d) {\n+ var tgtId = typeof d.target === 'object' ? d.target.id : d.target;\n+ return forcedSet.has(tgtId);\n+ });\n+ }());","path":"docs/superpowers/plans/2026-07-09-begin-forced-cells-ui.md","commit_id":"19ffc25bd4404bed6eb3087bd49b275da7e02897","original_commit_id":"54f1eb74bd24a84890f8fb078784834ac5a3ad27","user":{"login":"sean-parent","id":2279724,"node_id":"MDQ6VXNlcjIyNzk3MjQ=","avatar_url":"https://avatars.githubusercontent.com/u/2279724?v=4","gravatar_id":"","url":"https://api.github.com/users/sean-parent","html_url":"https://github.com/sean-parent","followers_url":"https://api.github.com/users/sean-parent/followers","following_url":"https://api.github.com/users/sean-parent/following{/other_user}","gists_url":"https://api.github.com/users/sean-parent/gists{/gist_id}","starred_url":"https://api.github.com/users/sean-parent/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/sean-parent/subscriptions","organizations_url":"https://api.github.com/users/sean-parent/orgs","repos_url":"https://api.github.com/users/sean-parent/repos","events_url":"https://api.github.com/users/sean-parent/events{/privacy}","received_events_url":"https://api.github.com/users/sean-parent/received_events","type":"User","user_view_type":"public","site_admin":false},"body":"Fixed. Added a superseded-during-implementation note (matching the pattern already used in the design doc) explaining the shipped code also highlights edges whose source is forced, not just the target.","created_at":"2026-07-10T17:27:28Z","updated_at":"2026-07-10T17:27:28Z","html_url":"https://github.com/stlab/cel-rs/pull/35#discussion_r3560794145","pull_request_url":"https://api.github.com/repos/stlab/cel-rs/pulls/35","_links":{"self":{"href":"https://api.github.com/repos/stlab/cel-rs/pulls/comments/3560794145"},"html":{"href":"https://github.com/stlab/cel-rs/pull/35#discussion_r3560794145"},"pull_request":{"href":"https://api.github.com/repos/stlab/cel-rs/pulls/35"}},"reactions":{"url":"https://api.github.com/repos/stlab/cel-rs/pulls/comments/3560794145/reactions","total_count":0,"+1":0,"-1":0,"laugh":0,"hooray":0,"confused":0,"heart":0,"rocket":0,"eyes":0},"in_reply_to_id":3556397817,"original_position":276,"position":282,"subject_type":"line"},"pull_request":{"url":"https://api.github.com/repos/stlab/cel-rs/pulls/35","id":4026803873,"number":35,"head":{"ref":"worktree-forced-to-disabled","sha":"19ffc25bd4404bed6eb3087bd49b275da7e02897","repo":{"id":931828453,"url":"https://api.github.com/repos/stlab/cel-rs","name":"cel-rs"}},"base":{"ref":"main","sha":"e214034ed87d6bb356bd3877153a0435ccf7904e","repo":{"id":931828453,"url":"https://api.github.com/repos/stlab/cel-rs","name":"cel-rs"}}}},"public":true,"created_at":"2026-07-10T17:27:28Z","org":{"id":2448845,"login":"stlab","gravatar_id":"","url":"https://api.github.com/orgs/stlab","avatar_url":"https://avatars.githubusercontent.com/u/2448845?"}},{"id":"11626585888","type":"PullRequestReviewEvent","actor":{"id":2279724,"login":"sean-parent","display_login":"sean-parent","gravatar_id":"","url":"https://api.github.com/users/sean-parent","avatar_url":"https://avatars.githubusercontent.com/u/2279724?"},"repo":{"id":931828453,"name":"stlab/cel-rs","url":"https://api.github.com/repos/stlab/cel-rs"},"payload":{"review":{"id":4673600244,"node_id":"PRR_kwDON4qS5c8AAAABFpF69A","user":{"login":"sean-parent","id":2279724,"node_id":"MDQ6VXNlcjIyNzk3MjQ=","avatar_url":"https://avatars.githubusercontent.com/u/2279724?v=4","gravatar_id":"","url":"https://api.github.com/users/sean-parent","html_url":"https://github.com/sean-parent","followers_url":"https://api.github.com/users/sean-parent/followers","following_url":"https://api.github.com/users/sean-parent/following{/other_user}","gists_url":"https://api.github.com/users/sean-parent/gists{/gist_id}","starred_url":"https://api.github.com/users/sean-parent/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/sean-parent/subscriptions","organizations_url":"https://api.github.com/users/sean-parent/orgs","repos_url":"https://api.github.com/users/sean-parent/repos","events_url":"https://api.github.com/users/sean-parent/events{/privacy}","received_events_url":"https://api.github.com/users/sean-parent/received_events","type":"User","user_view_type":"public","site_admin":false},"body":null,"commit_id":"54f1eb74bd24a84890f8fb078784834ac5a3ad27","state":"commented","html_url":"https://github.com/stlab/cel-rs/pull/35#pullrequestreview-4673600244","pull_request_url":"https://api.github.com/repos/stlab/cel-rs/pulls/35","_links":{"html":{"href":"https://github.com/stlab/cel-rs/pull/35#pullrequestreview-4673600244"},"pull_request":{"href":"https://api.github.com/repos/stlab/cel-rs/pulls/35"}},"submitted_at":"2026-07-10T17:27:28Z","updated_at":"2026-07-10T17:27:28Z"},"pull_request":{"url":"https://api.github.com/repos/stlab/cel-rs/pulls/35","id":4026803873,"number":35,"head":{"ref":"worktree-forced-to-disabled","sha":"19ffc25bd4404bed6eb3087bd49b275da7e02897","repo":{"id":931828453,"url":"https://api.github.com/repos/stlab/cel-rs","name":"cel-rs"}},"base":{"ref":"main","sha":"e214034ed87d6bb356bd3877153a0435ccf7904e","repo":{"id":931828453,"url":"https://api.github.com/repos/stlab/cel-rs","name":"cel-rs"}}},"action":"created"},"public":true,"created_at":"2026-07-10T17:27:28Z","org":{"id":2448845,"login":"stlab","gravatar_id":"","url":"https://api.github.com/orgs/stlab","avatar_url":"https://avatars.githubusercontent.com/u/2448845?"}},{"id":"11626584945","type":"PullRequestReviewCommentEvent","actor":{"id":2279724,"login":"sean-parent","display_login":"sean-parent","gravatar_id":"","url":"https://api.github.com/users/sean-parent","avatar_url":"https://avatars.githubusercontent.com/u/2279724?"},"repo":{"id":931828453,"name":"stlab/cel-rs","url":"https://api.github.com/repos/stlab/cel-rs"},"payload":{"action":"created","comment":{"url":"https://api.github.com/repos/stlab/cel-rs/pulls/comments/3560793835","pull_request_review_id":4673599855,"id":3560793835,"node_id":"PRRC_kwDON4qS5c7UPWbr","diff_hunk":"@@ -0,0 +1,119 @@\n+# `begin`: Surface Forced Cells in the UI\n+\n+**Date:** 2026-07-09\n+**Author:** Sean Parent (with Claude)\n+**Status:** Approved\n+\n+## Problem\n+\n+`property_model::Sheet` already exposes `is_forced(id)` and `forced_cells()` (added in\n+the \"Planner: Forced-Output Cells\" work), reporting which cells some active\n+relationship's method structure guarantees will always be overwritten by `propagate()`,\n+regardless of write-recency strength. Writing to a forced cell is either silently\n+overwritten on the next propagate or edited by the user in a field that can never\n+actually take effect.\n+\n+The `begin` demo app does not use this API at all: the Inspector sidebar renders every\n+cell as an editable text field, forced or not, and the D3 graph gives no visual\n+indication that a cell (or the edge feeding it) is forced. The demo source also has no\n+example of a conditional relationship that forces a cell, so there is nothing to\n+exercise this behavior against.\n+\n+## Design\n+\n+### Inspector: disable forced fields\n+\n+`SpTextfield` (`begin/src/spectrum.rs`) gains a `disabled: bool` prop, mapped to the\n+`disabled` boolean attribute on `` the same way `invalid` already maps to\n+the `invalid` attribute (present when `true`, omitted when `false`).\n+\n+`CellRow` (`begin/src/inspector.rs`) computes:\n+\n+```rust\n+let forced = use_memo(move || sheet.read().is_forced(id));\n+```\n+\n+and passes `disabled: *forced.read()` to `SpTextfield`. The custom element's native\n+disabled behavior blocks focus and input at the DOM level, so no additional guard is\n+needed in the `oninput` handler.\n+\n+### Graph: highlight forced cells and their producing edge\n+\n+`bridge::GraphData` (`begin/src/bridge.rs`) gains a `forced: Vec` field —\n+stable cell-node IDs, populated the same way as the existing `changed` field:\n+\n+```rust\n+let forced = sheet.forced_cells().map(cell_node_id).collect();\n+```\n+\n+`graph.js`'s `update()` builds a `Set` from `data.forced` and:\n+- toggles a `forced` CSS class on cell `` elements whose ID is in the set\n+- toggles a `forced-edge` CSS class on constraint `` elements whose *source or\n+ target* is a forced cell — both the incoming edge from the relationship that produces\n+ it, and any outgoing edges carrying its (also guaranteed) value onward to other\n+ relationships\n+\n+`graph.css` adds:\n+\n+```css\n+.node-cell.forced { stroke: #8e44ad; stroke-width: 3; }\n+.link.forced-edge { stroke: #8e44ad; stroke-width: 3; }\n+```\n+\n+A distinct purple, chosen not to collide with the existing pulse color (`#f90`) or\n+branch colors (`#4a90d9` / `#e67e22`). Forced cells are always part of a currently\n+*active* relationship, so this never conflicts with the existing inactive-relationship\n+dimming (which only applies to relationships an active control link has switched off).\n+\n+### Demo source: a conditional relationship that forces a cell\n+\n+> **Superseded during implementation:** the form below (folding `[c] -> [g]` into the\n+> existing `1i32` branch) does not force `g`. pm-lang groups every method in one branch\n+> into a single relationship, and a relationship's forced outputs are the intersection\n+> of its methods' pure outputs — mixing `[c] -> [g]` in with the `c`/`f` methods makes\n+> that intersection empty. The shipped code instead declares `g`'s method in its own\n+> `conditional p { 1i32 => { .. } }` block, gated on the same match cell; see the doc\n+> comment on `DEMO_SOURCE` in `begin/src/app.rs` for the final form.\n+\n+`DEMO_SOURCE` (`begin/src/app.rs`) adds one cell and one method to the existing `p`\n+conditional's `1i32` branch, rather than introducing an unrelated second conditional:\n+\n+```\n+cell g: f64;\n+...\n+conditional p {\n+ 0i32 => { ... }\n+ 1i32 => {\n+ method [f] -> [c] { f * 2.0 }\n+ method [c] -> [f] { c / 2.0 }\n+ method [c] -> [g] { c * 10.0 }\n+ }\n+}\n+```\n+\n+`[c] -> [g]` is a single-method relationship, so `g` is forced whenever branch `1i32` is\n+active and not forced otherwise — directly exercising \"forced only while its owning\n+conditional branch is active.\" Setting `p` to `1` in the running demo disables `g`'s\n+Inspector field and highlights `g` and its incoming edge in the graph; setting `p` back\n+to `0` (or anything else) re-enables it.\n+\n+## Testing\n+\n+- `begin/src/bridge.rs`: unit test that `to_graph_data` includes a forced cell's node ID\n+ in `GraphData::forced` after `propagate()` activates the forcing branch, and omits it\n+ when the branch is inactive.\n+- `begin/src/spectrum.rs` / `inspector.rs`: no new Rust-testable behavior beyond the\n+ `disabled` prop threading through `SpTextfield`, which is a thin wrapper already\n+ covered by existing component patterns; no dedicated unit test needed (rendering isn't\n+ exercised by `cargo test` for Dioxus components in this crate today, consistent with\n+ the rest of `inspector.rs`).\n+- Manual verification: run the app, toggle `p` between `0` and `1`, confirm `g`'s field\n+ disables/enables and the graph highlights `g` + its incoming edge accordingly.\n+\n+## Out of Scope\n+\n+- No changes to `property-model`; `is_forced`/`forced_cells` already exist.\n+- No tooltip or label annotation on forced fields — disabling the input is sufficient\n+ per current design; a label annotation can be added later if it proves necessary.\n+- No highlighting of the relationship node that produces a forced cell, only the cell\n+ and its incoming edge, per the approved design.","path":"docs/superpowers/specs/2026-07-09-begin-forced-cells-ui-design.md","commit_id":"54f1eb74bd24a84890f8fb078784834ac5a3ad27","original_commit_id":"54f1eb74bd24a84890f8fb078784834ac5a3ad27","user":{"login":"sean-parent","id":2279724,"node_id":"MDQ6VXNlcjIyNzk3MjQ=","avatar_url":"https://avatars.githubusercontent.com/u/2279724?v=4","gravatar_id":"","url":"https://api.github.com/users/sean-parent","html_url":"https://github.com/sean-parent","followers_url":"https://api.github.com/users/sean-parent/followers","following_url":"https://api.github.com/users/sean-parent/following{/other_user}","gists_url":"https://api.github.com/users/sean-parent/gists{/gist_id}","starred_url":"https://api.github.com/users/sean-parent/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/sean-parent/subscriptions","organizations_url":"https://api.github.com/users/sean-parent/orgs","repos_url":"https://api.github.com/users/sean-parent/repos","events_url":"https://api.github.com/users/sean-parent/events{/privacy}","received_events_url":"https://api.github.com/users/sean-parent/received_events","type":"User","user_view_type":"public","site_admin":false},"body":"Fixed. Reworded to only exclude highlighting the relationship node, per your suggestion.","created_at":"2026-07-10T17:27:26Z","updated_at":"2026-07-10T17:27:26Z","html_url":"https://github.com/stlab/cel-rs/pull/35#discussion_r3560793835","pull_request_url":"https://api.github.com/repos/stlab/cel-rs/pulls/35","_links":{"self":{"href":"https://api.github.com/repos/stlab/cel-rs/pulls/comments/3560793835"},"html":{"href":"https://github.com/stlab/cel-rs/pull/35#discussion_r3560793835"},"pull_request":{"href":"https://api.github.com/repos/stlab/cel-rs/pulls/35"}},"reactions":{"url":"https://api.github.com/repos/stlab/cel-rs/pulls/comments/3560793835/reactions","total_count":0,"+1":0,"-1":0,"laugh":0,"hooray":0,"confused":0,"heart":0,"rocket":0,"eyes":0},"in_reply_to_id":3556397795,"original_position":119,"position":1,"subject_type":"line"},"pull_request":{"url":"https://api.github.com/repos/stlab/cel-rs/pulls/35","id":4026803873,"number":35,"head":{"ref":"worktree-forced-to-disabled","sha":"19ffc25bd4404bed6eb3087bd49b275da7e02897","repo":{"id":931828453,"url":"https://api.github.com/repos/stlab/cel-rs","name":"cel-rs"}},"base":{"ref":"main","sha":"e214034ed87d6bb356bd3877153a0435ccf7904e","repo":{"id":931828453,"url":"https://api.github.com/repos/stlab/cel-rs","name":"cel-rs"}}}},"public":true,"created_at":"2026-07-10T17:27:26Z","org":{"id":2448845,"login":"stlab","gravatar_id":"","url":"https://api.github.com/orgs/stlab","avatar_url":"https://avatars.githubusercontent.com/u/2448845?"}},{"id":"11626584751","type":"PullRequestReviewEvent","actor":{"id":2279724,"login":"sean-parent","display_login":"sean-parent","gravatar_id":"","url":"https://api.github.com/users/sean-parent","avatar_url":"https://avatars.githubusercontent.com/u/2279724?"},"repo":{"id":931828453,"name":"stlab/cel-rs","url":"https://api.github.com/repos/stlab/cel-rs"},"payload":{"review":{"id":4673599855,"node_id":"PRR_kwDON4qS5c8AAAABFpF5bw","user":{"login":"sean-parent","id":2279724,"node_id":"MDQ6VXNlcjIyNzk3MjQ=","avatar_url":"https://avatars.githubusercontent.com/u/2279724?v=4","gravatar_id":"","url":"https://api.github.com/users/sean-parent","html_url":"https://github.com/sean-parent","followers_url":"https://api.github.com/users/sean-parent/followers","following_url":"https://api.github.com/users/sean-parent/following{/other_user}","gists_url":"https://api.github.com/users/sean-parent/gists{/gist_id}","starred_url":"https://api.github.com/users/sean-parent/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/sean-parent/subscriptions","organizations_url":"https://api.github.com/users/sean-parent/orgs","repos_url":"https://api.github.com/users/sean-parent/repos","events_url":"https://api.github.com/users/sean-parent/events{/privacy}","received_events_url":"https://api.github.com/users/sean-parent/received_events","type":"User","user_view_type":"public","site_admin":false},"body":null,"commit_id":"54f1eb74bd24a84890f8fb078784834ac5a3ad27","state":"commented","html_url":"https://github.com/stlab/cel-rs/pull/35#pullrequestreview-4673599855","pull_request_url":"https://api.github.com/repos/stlab/cel-rs/pulls/35","_links":{"html":{"href":"https://github.com/stlab/cel-rs/pull/35#pullrequestreview-4673599855"},"pull_request":{"href":"https://api.github.com/repos/stlab/cel-rs/pulls/35"}},"submitted_at":"2026-07-10T17:27:26Z","updated_at":"2026-07-10T17:27:26Z"},"pull_request":{"url":"https://api.github.com/repos/stlab/cel-rs/pulls/35","id":4026803873,"number":35,"head":{"ref":"worktree-forced-to-disabled","sha":"19ffc25bd4404bed6eb3087bd49b275da7e02897","repo":{"id":931828453,"url":"https://api.github.com/repos/stlab/cel-rs","name":"cel-rs"}},"base":{"ref":"main","sha":"e214034ed87d6bb356bd3877153a0435ccf7904e","repo":{"id":931828453,"url":"https://api.github.com/repos/stlab/cel-rs","name":"cel-rs"}}},"action":"created"},"public":true,"created_at":"2026-07-10T17:27:27Z","org":{"id":2448845,"login":"stlab","gravatar_id":"","url":"https://api.github.com/orgs/stlab","avatar_url":"https://avatars.githubusercontent.com/u/2448845?"}},{"id":"11626583113","type":"PullRequestReviewCommentEvent","actor":{"id":2279724,"login":"sean-parent","display_login":"sean-parent","gravatar_id":"","url":"https://api.github.com/users/sean-parent","avatar_url":"https://avatars.githubusercontent.com/u/2279724?"},"repo":{"id":931828453,"name":"stlab/cel-rs","url":"https://api.github.com/repos/stlab/cel-rs"},"payload":{"action":"created","comment":{"url":"https://api.github.com/repos/stlab/cel-rs/pulls/comments/3560793542","pull_request_review_id":4673599554,"id":3560793542,"node_id":"PRRC_kwDON4qS5c7UPWXG","diff_hunk":"@@ -0,0 +1,119 @@\n+# `begin`: Surface Forced Cells in the UI\n+\n+**Date:** 2026-07-09\n+**Author:** Sean Parent (with Claude)\n+**Status:** Approved\n+\n+## Problem\n+\n+`property_model::Sheet` already exposes `is_forced(id)` and `forced_cells()` (added in\n+the \"Planner: Forced-Output Cells\" work), reporting which cells some active\n+relationship's method structure guarantees will always be overwritten by `propagate()`,\n+regardless of write-recency strength. Writing to a forced cell is either silently\n+overwritten on the next propagate or edited by the user in a field that can never\n+actually take effect.\n+\n+The `begin` demo app does not use this API at all: the Inspector sidebar renders every\n+cell as an editable text field, forced or not, and the D3 graph gives no visual\n+indication that a cell (or the edge feeding it) is forced. The demo source also has no\n+example of a conditional relationship that forces a cell, so there is nothing to\n+exercise this behavior against.\n+\n+## Design\n+\n+### Inspector: disable forced fields\n+\n+`SpTextfield` (`begin/src/spectrum.rs`) gains a `disabled: bool` prop, mapped to the\n+`disabled` boolean attribute on `` the same way `invalid` already maps to\n+the `invalid` attribute (present when `true`, omitted when `false`).\n+\n+`CellRow` (`begin/src/inspector.rs`) computes:\n+\n+```rust\n+let forced = use_memo(move || sheet.read().is_forced(id));\n+```\n+\n+and passes `disabled: *forced.read()` to `SpTextfield`. The custom element's native\n+disabled behavior blocks focus and input at the DOM level, so no additional guard is\n+needed in the `oninput` handler.\n+\n+### Graph: highlight forced cells and their producing edge\n+\n+`bridge::GraphData` (`begin/src/bridge.rs`) gains a `forced: Vec` field —\n+stable cell-node IDs, populated the same way as the existing `changed` field:\n+\n+```rust\n+let forced = sheet.forced_cells().map(cell_node_id).collect();\n+```\n+\n+`graph.js`'s `update()` builds a `Set` from `data.forced` and:\n+- toggles a `forced` CSS class on cell `` elements whose ID is in the set\n+- toggles a `forced-edge` CSS class on constraint `` elements whose *source or\n+ target* is a forced cell — both the incoming edge from the relationship that produces\n+ it, and any outgoing edges carrying its (also guaranteed) value onward to other\n+ relationships\n+\n+`graph.css` adds:\n+\n+```css\n+.node-cell.forced { stroke: #8e44ad; stroke-width: 3; }\n+.link.forced-edge { stroke: #8e44ad; stroke-width: 3; }\n+```\n+\n+A distinct purple, chosen not to collide with the existing pulse color (`#f90`) or\n+branch colors (`#4a90d9` / `#e67e22`). Forced cells are always part of a currently\n+*active* relationship, so this never conflicts with the existing inactive-relationship\n+dimming (which only applies to relationships an active control link has switched off).\n+\n+### Demo source: a conditional relationship that forces a cell\n+\n+> **Superseded during implementation:** the form below (folding `[c] -> [g]` into the\n+> existing `1i32` branch) does not force `g`. pm-lang groups every method in one branch\n+> into a single relationship, and a relationship's forced outputs are the intersection\n+> of its methods' pure outputs — mixing `[c] -> [g]` in with the `c`/`f` methods makes\n+> that intersection empty. The shipped code instead declares `g`'s method in its own\n+> `conditional p { 1i32 => { .. } }` block, gated on the same match cell; see the doc\n+> comment on `DEMO_SOURCE` in `begin/src/app.rs` for the final form.\n+\n+`DEMO_SOURCE` (`begin/src/app.rs`) adds one cell and one method to the existing `p`\n+conditional's `1i32` branch, rather than introducing an unrelated second conditional:\n+\n+```\n+cell g: f64;\n+...\n+conditional p {\n+ 0i32 => { ... }\n+ 1i32 => {\n+ method [f] -> [c] { f * 2.0 }\n+ method [c] -> [f] { c / 2.0 }\n+ method [c] -> [g] { c * 10.0 }\n+ }\n+}\n+```\n+\n+`[c] -> [g]` is a single-method relationship, so `g` is forced whenever branch `1i32` is\n+active and not forced otherwise — directly exercising \"forced only while its owning\n+conditional branch is active.\" Setting `p` to `1` in the running demo disables `g`'s\n+Inspector field and highlights `g` and its incoming edge in the graph; setting `p` back\n+to `0` (or anything else) re-enables it.\n+\n+## Testing\n+\n+- `begin/src/bridge.rs`: unit test that `to_graph_data` includes a forced cell's node ID\n+ in `GraphData::forced` after `propagate()` activates the forcing branch, and omits it\n+ when the branch is inactive.\n+- `begin/src/spectrum.rs` / `inspector.rs`: no new Rust-testable behavior beyond the\n+ `disabled` prop threading through `SpTextfield`, which is a thin wrapper already\n+ covered by existing component patterns; no dedicated unit test needed (rendering isn't\n+ exercised by `cargo test` for Dioxus components in this crate today, consistent with\n+ the rest of `inspector.rs`).\n+- Manual verification: run the app, toggle `p` between `0` and `1`, confirm `g`'s field\n+ disables/enables and the graph highlights `g` + its incoming edge accordingly.","path":"docs/superpowers/specs/2026-07-09-begin-forced-cells-ui-design.md","commit_id":"54f1eb74bd24a84890f8fb078784834ac5a3ad27","original_commit_id":"54f1eb74bd24a84890f8fb078784834ac5a3ad27","user":{"login":"sean-parent","id":2279724,"node_id":"MDQ6VXNlcjIyNzk3MjQ=","avatar_url":"https://avatars.githubusercontent.com/u/2279724?v=4","gravatar_id":"","url":"https://api.github.com/users/sean-parent","html_url":"https://github.com/sean-parent","followers_url":"https://api.github.com/users/sean-parent/followers","following_url":"https://api.github.com/users/sean-parent/following{/other_user}","gists_url":"https://api.github.com/users/sean-parent/gists{/gist_id}","starred_url":"https://api.github.com/users/sean-parent/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/sean-parent/subscriptions","organizations_url":"https://api.github.com/users/sean-parent/orgs","repos_url":"https://api.github.com/users/sean-parent/repos","events_url":"https://api.github.com/users/sean-parent/events{/privacy}","received_events_url":"https://api.github.com/users/sean-parent/received_events","type":"User","user_view_type":"public","site_admin":false},"body":"Fixed. Manual verification step now says \"every constraint edge touching it\" instead of just the incoming edge.","created_at":"2026-07-10T17:27:24Z","updated_at":"2026-07-10T17:27:24Z","html_url":"https://github.com/stlab/cel-rs/pull/35#discussion_r3560793542","pull_request_url":"https://api.github.com/repos/stlab/cel-rs/pulls/35","_links":{"self":{"href":"https://api.github.com/repos/stlab/cel-rs/pulls/comments/3560793542"},"html":{"href":"https://github.com/stlab/cel-rs/pull/35#discussion_r3560793542"},"pull_request":{"href":"https://api.github.com/repos/stlab/cel-rs/pulls/35"}},"reactions":{"url":"https://api.github.com/repos/stlab/cel-rs/pulls/comments/3560793542/reactions","total_count":0,"+1":0,"-1":0,"laugh":0,"hooray":0,"confused":0,"heart":0,"rocket":0,"eyes":0},"in_reply_to_id":3556397786,"original_position":111,"position":1,"subject_type":"line"},"pull_request":{"url":"https://api.github.com/repos/stlab/cel-rs/pulls/35","id":4026803873,"number":35,"head":{"ref":"worktree-forced-to-disabled","sha":"19ffc25bd4404bed6eb3087bd49b275da7e02897","repo":{"id":931828453,"url":"https://api.github.com/repos/stlab/cel-rs","name":"cel-rs"}},"base":{"ref":"main","sha":"e214034ed87d6bb356bd3877153a0435ccf7904e","repo":{"id":931828453,"url":"https://api.github.com/repos/stlab/cel-rs","name":"cel-rs"}}}},"public":true,"created_at":"2026-07-10T17:27:24Z","org":{"id":2448845,"login":"stlab","gravatar_id":"","url":"https://api.github.com/orgs/stlab","avatar_url":"https://avatars.githubusercontent.com/u/2448845?"}},{"id":"11626583105","type":"PullRequestReviewEvent","actor":{"id":2279724,"login":"sean-parent","display_login":"sean-parent","gravatar_id":"","url":"https://api.github.com/users/sean-parent","avatar_url":"https://avatars.githubusercontent.com/u/2279724?"},"repo":{"id":931828453,"name":"stlab/cel-rs","url":"https://api.github.com/repos/stlab/cel-rs"},"payload":{"review":{"id":4673599554,"node_id":"PRR_kwDON4qS5c8AAAABFpF4Qg","user":{"login":"sean-parent","id":2279724,"node_id":"MDQ6VXNlcjIyNzk3MjQ=","avatar_url":"https://avatars.githubusercontent.com/u/2279724?v=4","gravatar_id":"","url":"https://api.github.com/users/sean-parent","html_url":"https://github.com/sean-parent","followers_url":"https://api.github.com/users/sean-parent/followers","following_url":"https://api.github.com/users/sean-parent/following{/other_user}","gists_url":"https://api.github.com/users/sean-parent/gists{/gist_id}","starred_url":"https://api.github.com/users/sean-parent/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/sean-parent/subscriptions","organizations_url":"https://api.github.com/users/sean-parent/orgs","repos_url":"https://api.github.com/users/sean-parent/repos","events_url":"https://api.github.com/users/sean-parent/events{/privacy}","received_events_url":"https://api.github.com/users/sean-parent/received_events","type":"User","user_view_type":"public","site_admin":false},"body":null,"commit_id":"54f1eb74bd24a84890f8fb078784834ac5a3ad27","state":"commented","html_url":"https://github.com/stlab/cel-rs/pull/35#pullrequestreview-4673599554","pull_request_url":"https://api.github.com/repos/stlab/cel-rs/pulls/35","_links":{"html":{"href":"https://github.com/stlab/cel-rs/pull/35#pullrequestreview-4673599554"},"pull_request":{"href":"https://api.github.com/repos/stlab/cel-rs/pulls/35"}},"submitted_at":"2026-07-10T17:27:24Z","updated_at":"2026-07-10T17:27:24Z"},"pull_request":{"url":"https://api.github.com/repos/stlab/cel-rs/pulls/35","id":4026803873,"number":35,"head":{"ref":"worktree-forced-to-disabled","sha":"19ffc25bd4404bed6eb3087bd49b275da7e02897","repo":{"id":931828453,"url":"https://api.github.com/repos/stlab/cel-rs","name":"cel-rs"}},"base":{"ref":"main","sha":"e214034ed87d6bb356bd3877153a0435ccf7904e","repo":{"id":931828453,"url":"https://api.github.com/repos/stlab/cel-rs","name":"cel-rs"}}},"action":"created"},"public":true,"created_at":"2026-07-10T17:27:24Z","org":{"id":2448845,"login":"stlab","gravatar_id":"","url":"https://api.github.com/orgs/stlab","avatar_url":"https://avatars.githubusercontent.com/u/2448845?"}},{"id":"11626582291","type":"PullRequestReviewCommentEvent","actor":{"id":2279724,"login":"sean-parent","display_login":"sean-parent","gravatar_id":"","url":"https://api.github.com/users/sean-parent","avatar_url":"https://avatars.githubusercontent.com/u/2279724?"},"repo":{"id":931828453,"name":"stlab/cel-rs","url":"https://api.github.com/repos/stlab/cel-rs"},"payload":{"action":"created","comment":{"url":"https://api.github.com/repos/stlab/cel-rs/pulls/comments/3560793390","pull_request_review_id":4673599344,"id":3560793390,"node_id":"PRRC_kwDON4qS5c7UPWUu","diff_hunk":"@@ -0,0 +1,119 @@\n+# `begin`: Surface Forced Cells in the UI\n+\n+**Date:** 2026-07-09\n+**Author:** Sean Parent (with Claude)\n+**Status:** Approved\n+\n+## Problem\n+\n+`property_model::Sheet` already exposes `is_forced(id)` and `forced_cells()` (added in\n+the \"Planner: Forced-Output Cells\" work), reporting which cells some active\n+relationship's method structure guarantees will always be overwritten by `propagate()`,\n+regardless of write-recency strength. Writing to a forced cell is either silently\n+overwritten on the next propagate or edited by the user in a field that can never\n+actually take effect.\n+\n+The `begin` demo app does not use this API at all: the Inspector sidebar renders every\n+cell as an editable text field, forced or not, and the D3 graph gives no visual\n+indication that a cell (or the edge feeding it) is forced. The demo source also has no\n+example of a conditional relationship that forces a cell, so there is nothing to\n+exercise this behavior against.\n+\n+## Design\n+\n+### Inspector: disable forced fields\n+\n+`SpTextfield` (`begin/src/spectrum.rs`) gains a `disabled: bool` prop, mapped to the\n+`disabled` boolean attribute on `` the same way `invalid` already maps to\n+the `invalid` attribute (present when `true`, omitted when `false`).\n+\n+`CellRow` (`begin/src/inspector.rs`) computes:\n+\n+```rust\n+let forced = use_memo(move || sheet.read().is_forced(id));\n+```\n+\n+and passes `disabled: *forced.read()` to `SpTextfield`. The custom element's native\n+disabled behavior blocks focus and input at the DOM level, so no additional guard is\n+needed in the `oninput` handler.\n+\n+### Graph: highlight forced cells and their producing edge\n+\n+`bridge::GraphData` (`begin/src/bridge.rs`) gains a `forced: Vec` field —\n+stable cell-node IDs, populated the same way as the existing `changed` field:\n+\n+```rust\n+let forced = sheet.forced_cells().map(cell_node_id).collect();\n+```\n+\n+`graph.js`'s `update()` builds a `Set` from `data.forced` and:\n+- toggles a `forced` CSS class on cell `` elements whose ID is in the set\n+- toggles a `forced-edge` CSS class on constraint `` elements whose *source or\n+ target* is a forced cell — both the incoming edge from the relationship that produces\n+ it, and any outgoing edges carrying its (also guaranteed) value onward to other\n+ relationships\n+\n+`graph.css` adds:\n+\n+```css\n+.node-cell.forced { stroke: #8e44ad; stroke-width: 3; }\n+.link.forced-edge { stroke: #8e44ad; stroke-width: 3; }\n+```\n+\n+A distinct purple, chosen not to collide with the existing pulse color (`#f90`) or\n+branch colors (`#4a90d9` / `#e67e22`). Forced cells are always part of a currently\n+*active* relationship, so this never conflicts with the existing inactive-relationship\n+dimming (which only applies to relationships an active control link has switched off).\n+\n+### Demo source: a conditional relationship that forces a cell\n+\n+> **Superseded during implementation:** the form below (folding `[c] -> [g]` into the\n+> existing `1i32` branch) does not force `g`. pm-lang groups every method in one branch\n+> into a single relationship, and a relationship's forced outputs are the intersection\n+> of its methods' pure outputs — mixing `[c] -> [g]` in with the `c`/`f` methods makes\n+> that intersection empty. The shipped code instead declares `g`'s method in its own\n+> `conditional p { 1i32 => { .. } }` block, gated on the same match cell; see the doc\n+> comment on `DEMO_SOURCE` in `begin/src/app.rs` for the final form.\n+\n+`DEMO_SOURCE` (`begin/src/app.rs`) adds one cell and one method to the existing `p`\n+conditional's `1i32` branch, rather than introducing an unrelated second conditional:\n+\n+```\n+cell g: f64;\n+...\n+conditional p {\n+ 0i32 => { ... }\n+ 1i32 => {\n+ method [f] -> [c] { f * 2.0 }\n+ method [c] -> [f] { c / 2.0 }\n+ method [c] -> [g] { c * 10.0 }\n+ }\n+}\n+```\n+\n+`[c] -> [g]` is a single-method relationship, so `g` is forced whenever branch `1i32` is\n+active and not forced otherwise — directly exercising \"forced only while its owning\n+conditional branch is active.\" Setting `p` to `1` in the running demo disables `g`'s\n+Inspector field and highlights `g` and its incoming edge in the graph; setting `p` back\n+to `0` (or anything else) re-enables it.","path":"docs/superpowers/specs/2026-07-09-begin-forced-cells-ui-design.md","commit_id":"54f1eb74bd24a84890f8fb078784834ac5a3ad27","original_commit_id":"54f1eb74bd24a84890f8fb078784834ac5a3ad27","user":{"login":"sean-parent","id":2279724,"node_id":"MDQ6VXNlcjIyNzk3MjQ=","avatar_url":"https://avatars.githubusercontent.com/u/2279724?v=4","gravatar_id":"","url":"https://api.github.com/users/sean-parent","html_url":"https://github.com/sean-parent","followers_url":"https://api.github.com/users/sean-parent/followers","following_url":"https://api.github.com/users/sean-parent/following{/other_user}","gists_url":"https://api.github.com/users/sean-parent/gists{/gist_id}","starred_url":"https://api.github.com/users/sean-parent/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/sean-parent/subscriptions","organizations_url":"https://api.github.com/users/sean-parent/orgs","repos_url":"https://api.github.com/users/sean-parent/repos","events_url":"https://api.github.com/users/sean-parent/events{/privacy}","received_events_url":"https://api.github.com/users/sean-parent/received_events","type":"User","user_view_type":"public","site_admin":false},"body":"Fixed. Now says the graph highlights every constraint edge touching a forced cell (incoming and outgoing), matching the Design section above and the implementation.","created_at":"2026-07-10T17:27:23Z","updated_at":"2026-07-10T17:27:23Z","html_url":"https://github.com/stlab/cel-rs/pull/35#discussion_r3560793390","pull_request_url":"https://api.github.com/repos/stlab/cel-rs/pulls/35","_links":{"self":{"href":"https://api.github.com/repos/stlab/cel-rs/pulls/comments/3560793390"},"html":{"href":"https://github.com/stlab/cel-rs/pull/35#discussion_r3560793390"},"pull_request":{"href":"https://api.github.com/repos/stlab/cel-rs/pulls/35"}},"reactions":{"url":"https://api.github.com/repos/stlab/cel-rs/pulls/comments/3560793390/reactions","total_count":0,"+1":0,"-1":0,"laugh":0,"hooray":0,"confused":0,"heart":0,"rocket":0,"eyes":0},"in_reply_to_id":3556397772,"original_position":98,"position":1,"subject_type":"line"},"pull_request":{"url":"https://api.github.com/repos/stlab/cel-rs/pulls/35","id":4026803873,"number":35,"head":{"ref":"worktree-forced-to-disabled","sha":"19ffc25bd4404bed6eb3087bd49b275da7e02897","repo":{"id":931828453,"url":"https://api.github.com/repos/stlab/cel-rs","name":"cel-rs"}},"base":{"ref":"main","sha":"e214034ed87d6bb356bd3877153a0435ccf7904e","repo":{"id":931828453,"url":"https://api.github.com/repos/stlab/cel-rs","name":"cel-rs"}}}},"public":true,"created_at":"2026-07-10T17:27:23Z","org":{"id":2448845,"login":"stlab","gravatar_id":"","url":"https://api.github.com/orgs/stlab","avatar_url":"https://avatars.githubusercontent.com/u/2448845?"}},{"id":"11626582251","type":"PullRequestReviewEvent","actor":{"id":2279724,"login":"sean-parent","display_login":"sean-parent","gravatar_id":"","url":"https://api.github.com/users/sean-parent","avatar_url":"https://avatars.githubusercontent.com/u/2279724?"},"repo":{"id":931828453,"name":"stlab/cel-rs","url":"https://api.github.com/repos/stlab/cel-rs"},"payload":{"review":{"id":4673599344,"node_id":"PRR_kwDON4qS5c8AAAABFpF3cA","user":{"login":"sean-parent","id":2279724,"node_id":"MDQ6VXNlcjIyNzk3MjQ=","avatar_url":"https://avatars.githubusercontent.com/u/2279724?v=4","gravatar_id":"","url":"https://api.github.com/users/sean-parent","html_url":"https://github.com/sean-parent","followers_url":"https://api.github.com/users/sean-parent/followers","following_url":"https://api.github.com/users/sean-parent/following{/other_user}","gists_url":"https://api.github.com/users/sean-parent/gists{/gist_id}","starred_url":"https://api.github.com/users/sean-parent/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/sean-parent/subscriptions","organizations_url":"https://api.github.com/users/sean-parent/orgs","repos_url":"https://api.github.com/users/sean-parent/repos","events_url":"https://api.github.com/users/sean-parent/events{/privacy}","received_events_url":"https://api.github.com/users/sean-parent/received_events","type":"User","user_view_type":"public","site_admin":false},"body":null,"commit_id":"54f1eb74bd24a84890f8fb078784834ac5a3ad27","state":"commented","html_url":"https://github.com/stlab/cel-rs/pull/35#pullrequestreview-4673599344","pull_request_url":"https://api.github.com/repos/stlab/cel-rs/pulls/35","_links":{"html":{"href":"https://github.com/stlab/cel-rs/pull/35#pullrequestreview-4673599344"},"pull_request":{"href":"https://api.github.com/repos/stlab/cel-rs/pulls/35"}},"submitted_at":"2026-07-10T17:27:23Z","updated_at":"2026-07-10T17:27:23Z"},"pull_request":{"url":"https://api.github.com/repos/stlab/cel-rs/pulls/35","id":4026803873,"number":35,"head":{"ref":"worktree-forced-to-disabled","sha":"19ffc25bd4404bed6eb3087bd49b275da7e02897","repo":{"id":931828453,"url":"https://api.github.com/repos/stlab/cel-rs","name":"cel-rs"}},"base":{"ref":"main","sha":"e214034ed87d6bb356bd3877153a0435ccf7904e","repo":{"id":931828453,"url":"https://api.github.com/repos/stlab/cel-rs","name":"cel-rs"}}},"action":"created"},"public":true,"created_at":"2026-07-10T17:27:23Z","org":{"id":2448845,"login":"stlab","gravatar_id":"","url":"https://api.github.com/orgs/stlab","avatar_url":"https://avatars.githubusercontent.com/u/2448845?"}},{"id":"11626581527","type":"PullRequestReviewEvent","actor":{"id":2279724,"login":"sean-parent","display_login":"sean-parent","gravatar_id":"","url":"https://api.github.com/users/sean-parent","avatar_url":"https://avatars.githubusercontent.com/u/2279724?"},"repo":{"id":931828453,"name":"stlab/cel-rs","url":"https://api.github.com/repos/stlab/cel-rs"},"payload":{"review":{"id":4673599114,"node_id":"PRR_kwDON4qS5c8AAAABFpF2ig","user":{"login":"sean-parent","id":2279724,"node_id":"MDQ6VXNlcjIyNzk3MjQ=","avatar_url":"https://avatars.githubusercontent.com/u/2279724?v=4","gravatar_id":"","url":"https://api.github.com/users/sean-parent","html_url":"https://github.com/sean-parent","followers_url":"https://api.github.com/users/sean-parent/followers","following_url":"https://api.github.com/users/sean-parent/following{/other_user}","gists_url":"https://api.github.com/users/sean-parent/gists{/gist_id}","starred_url":"https://api.github.com/users/sean-parent/starred{/owner}{/repo}","subscr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-0,0 +1,119 @@\n+# `begin`: Surface Forced Cells in the UI\n+\n+**Date:** 2026-07-09\n+**Author:** Sean Parent (with Claude)\n+**Status:** Approved\n+\n+## Problem\n+\n+`property_model::Sheet` already exposes `is_forced(id)` and `forced_cells()` (added in\n+the \"Planner: Forced-Output Cells\" work), reporting which cells some active\n+relationship's method structure guarantees will always be overwritten by `propagate()`,\n+regardless of write-recency strength. Writing to a forced cell is either silently\n+overwritten on the next propagate or edited by the user in a field that can never\n+actually take effect.\n+\n+The `begin` demo app does not use this API at all: the Inspector sidebar renders every\n+cell as an editable text field, forced or not, and the D3 graph gives no visual\n+indication that a cell (or the edge feeding it) is forced. The demo source also has no\n+example of a conditional relationship that forces a cell, so there is nothing to\n+exercise this behavior against.\n+\n+## Design\n+\n+### Inspector: disable forced fields\n+\n+`SpTextfield` (`begin/src/spectrum.rs`) gains a `disabled: bool` prop, mapped to the\n+`disabled` boolean attribute on `` the same way `invalid` already maps to\n+the `invalid` attribute (present when `true`, omitted when `false`).\n+\n+`CellRow` (`begin/src/inspector.rs`) computes:\n+\n+```rust\n+let forced = use_memo(move || sheet.read().is_forced(id));\n+```\n+\n+and passes `disabled: *forced.read()` to `SpTextfield`. The custom element's native\n+disabled behavior blocks focus and input at the DOM level, so no additional guard is\n+needed in the `oninput` handler.\n+\n+### Graph: highlight forced cells and their producing edge\n+\n+`bridge::GraphData` (`begin/src/bridge.rs`) gains a `forced: Vec` field —\n+stable cell-node IDs, populated the same way as the existing `changed` field:\n+\n+```rust\n+let forced = sheet.forced_cells().map(cell_node_id).collect();\n+```\n+\n+`graph.js`'s `update()` builds a `Set` from `data.forced` and:\n+- toggles a `forced` CSS class on cell `` elements whose ID is in the set\n+- toggles a `forced-edge` CSS class on constraint `` elements whose *source or\n+ target* is a forced cell — both the incoming edge from the relationship that produces\n+ it, and any outgoing edges carrying its (also guaranteed) value onward to other\n+ relationships\n+\n+`graph.css` adds:\n+\n+```css\n+.node-cell.forced { stroke: #8e44ad; stroke-width: 3; }\n+.link.forced-edge { stroke: #8e44ad; stroke-width: 3; }\n+```\n+\n+A distinct purple, chosen not to collide with the existing pulse color (`#f90`) or\n+branch colors (`#4a90d9` / `#e67e22`). Forced cells are always part of a currently\n+*active* relationship, so this never conflicts with the existing inactive-relationship\n+dimming (which only applies to relationships an active control link has switched off).\n+\n+### Demo source: a conditional relationship that forces a cell\n+\n+> **Superseded during implementation:** the form below (folding `[c] -> [g]` into the\n+> existing `1i32` branch) does not force `g`. pm-lang groups every method in one branch\n+> into a single relationship, and a relationship's forced outputs are the intersection\n+> of its methods' pure outputs — mixing `[c] -> [g]` in with the `c`/`f` methods makes\n+> that intersection empty. The shipped code instead declares `g`'s method in its own\n+> `conditional p { 1i32 => { .. } }` block, gated on the same match cell; see the doc\n+> comment on `DEMO_SOURCE` in `begin/src/app.rs` for the final form.\n+\n+`DEMO_SOURCE` (`begin/src/app.rs`) adds one cell and one method to the existing `p`\n+conditional's `1i32` branch, rather than introducing an unrelated second conditional:\n+\n+```\n+cell g: f64;\n+...\n+conditional p {\n+ 0i32 => { ... }\n+ 1i32 => {\n+ method [f] -> [c] { f * 2.0 }\n+ method [c] -> [f] { c / 2.0 }\n+ method [c] -> [g] { c * 10.0 }\n+ }\n+}\n+```","path":"docs/superpowers/specs/2026-07-09-begin-forced-cells-ui-design.md","commit_id":"54f1eb74bd24a84890f8fb078784834ac5a3ad27","original_commit_id":"54f1eb74bd24a84890f8fb078784834ac5a3ad27","user":{"login":"sean-parent","id":2279724,"node_id":"MDQ6VXNlcjIyNzk3MjQ=","avatar_url":"https://avatars.githubusercontent.com/u/2279724?v=4","gravatar_id":"","url":"https://api.github.com/users/sean-parent","html_url":"https://github.com/sean-parent","followers_url":"https://api.github.com/users/sean-parent/followers","following_url":"https://api.github.com/users/sean-parent/following{/other_user}","gists_url":"https://api.github.com/users/sean-parent/gists{/gist_id}","starred_url":"https://api.github.com/users/sean-parent/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/sean-parent/subscriptions","organizations_url":"https://api.github.com/users/sean-parent/orgs","repos_url":"https://api.github.com/users/sean-parent/repos","events_url":"https://api.github.com/users/sean-parent/events{/privacy}","received_events_url":"https://api.github.com/users/sean-parent/received_events","type":"User","user_view_type":"public","site_admin":false},"body":"Fixed. Rewrote the Demo Source section to describe the shipped two-conditional design directly, removing the contradiction between the superseded-note and the surrounding prose/snippet.","created_at":"2026-07-10T17:27:21Z","updated_at":"2026-07-10T17:27:21Z","html_url":"https://github.com/stlab/cel-rs/pull/35#discussion_r3560793207","pull_request_url":"https://api.github.com/repos/stlab/cel-rs/pulls/35","_links":{"self":{"href":"https://api.github.com/repos/stlab/cel-rs/pulls/comments/3560793207"},"html":{"href":"https://github.com/stlab/cel-rs/pull/35#discussion_r3560793207"},"pull_request":{"href":"https://api.github.com/repos/stlab/cel-rs/pulls/35"}},"reactions":{"url":"https://api.github.com/repos/stlab/cel-rs/pulls/comments/3560793207/reactions","total_count":0,"+1":0,"-1":0,"laugh":0,"hooray":0,"confused":0,"heart":0,"rocket":0,"eyes":0},"in_reply_to_id":3556397859,"original_position":92,"position":1,"subject_type":"line"},"pull_request":{"url":"https://api.github.com/repos/stlab/cel-rs/pulls/35","id":4026803873,"number":35,"head":{"ref":"worktree-forced-to-disabled","sha":"19ffc25bd4404bed6eb3087bd49b275da7e02897","repo":{"id":931828453,"url":"https://api.github.com/repos/stlab/cel-rs","name":"cel-rs"}},"base":{"ref":"main","sha":"e214034ed87d6bb356bd3877153a0435ccf7904e","repo":{"id":931828453,"url":"https://api.github.com/repos/stlab/cel-rs","name":"cel-rs"}}}},"public":true,"created_at":"2026-07-10T17:27:21Z","org":{"id":2448845,"login":"stlab","gravatar_id":"","url":"https://api.github.com/orgs/stlab","avatar_url":"https://avatars.githubusercontent.com/u/2448845?"}},{"id":"11613243661","type":"IssueCommentEvent","actor":{"id":199585039,"login":"TobiasCermann","display_login":"TobiasCermann","gravatar_id":"","url":"https://api.github.com/users/TobiasCermann","avatar_url":"https://avatars.githubusercontent.com/u/199585039?"},"repo":{"id":406923731,"name":"hsutter/cppfront","url":"https://api.github.com/repos/hsutter/cppfront"},"payload":{"action":"created","issue":{"url":"https://api.github.com/repos/hsutter/cppfront/issues/1403","repository_url":"https://api.github.com/repos/hsutter/cppfront","labels_url":"https://api.github.com/repos/hsutter/cppfront/issues/1403/labels{/name}","comments_url":"https://api.github.com/repos/hsutter/cppfront/issues/1403/comments","events_url":"https://api.github.com/repos/hsutter/cppfront/issues/1403/events","html_url":"https://github.com/hsutter/cppfront/issues/1403","id":3124754624,"node_id":"I_kwDOGEEp0866P_jA","number":1403,"title":"[BUG] static assertions fail with MSVC 14.44.35207","user":{"login":"TobiasCermann","id":199585039,"node_id":"U_kgDOC-VtDw","avatar_url":"https://avatars.githubusercontent.com/u/199585039?v=4","gravatar_id":"","url":"https://api.github.com/users/TobiasCermann","html_url":"https://github.com/TobiasCermann","followers_url":"https://api.github.com/users/TobiasCermann/followers","following_url":"https://api.github.com/users/TobiasCermann/following{/other_user}","gists_url":"https://api.github.com/users/TobiasCermann/gists{/gist_id}","starred_url":"https://api.github.com/users/TobiasCermann/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/TobiasCermann/subscriptions","organizations_url":"https://api.github.com/users/TobiasCermann/orgs","repos_url":"https://api.github.com/users/TobiasCermann/repos","events_url":"https://api.github.com/users/TobiasCermann/events{/privacy}","received_events_url":"https://api.github.com/users/TobiasCermann/received_events","type":"User","user_view_type":"public","site_admin":false},"labels":[{"id":3357950773,"node_id":"MDU6TGFiZWwzMzU3OTUwNzcz","url":"https://api.github.com/repos/hsutter/cppfront/labels/bug","name":"bug","color":"d73a4a","default":true,"description":"Something isn't working"}],"state":"closed","locked":false,"assignees":[],"milestone":null,"comments":5,"created_at":"2025-06-06T13:14:47Z","updated_at":"2026-07-10T23:59:06Z","closed_at":"2026-07-10T12:18:50Z","assignee":null,"active_lock_reason":null,"sub_issues_summary":{"total":0,"completed":0,"percent_completed":0},"issue_dependencies_summary":{"blocked_by":0,"total_blocked_by":0,"blocking":0,"total_blocking":0},"body":"[cppfront_fail.txt](https://github.com/user-attachments/files/20628708/cppfront_fail.txt)\n\nI successfully built cppfront using MSVC 14.43.34808 and Windows Kit 10.0.22621.0.\nAfter updating to MSVC 14.44.35207 (and Windows Kit 10.0.26100.0), a number of static assertions failed.\nReverting to the old toolchain fixed the problem. Both Windows Kits work.\n\nThe assertions are generated by the UFCS 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