F10 SLICE-3: ProposalController.listProposals + onDidChangeProposals + keyFor (#29)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/proposalController.ts

@@ -18,6 +18,7 @@ import { addProposal, removeProposal } from "./proposalModel";
 import type { AttributionController } from "./attributionController";
 import type { VersionGuard } from "./versionGuard";
 import { isAuthorable } from "./workspacePath";
+import type { ProposalView } from "./trackChangesModel";
 
 /** Test-facing snapshot of what is currently rendered for a document. */
 export interface RenderedProposal {
@@ -44,6 +45,9 @@ export class ProposalController implements vscode.Disposable {
   private readonly disposables: vscode.Disposable[] = [];
   private readonly docs = new Map<string, DocState>(); // keyed by docPath
   private readonly statusItem = vscode.window.createStatusBarItem(vscode.StatusBarAlignment.Right, 89);
+  private readonly onDidChangeProposalsEmitter = new vscode.EventEmitter<{ uri: string }>();
+  /** Fires on propose / accept / reject / external sidecar change (F10). */
+  readonly onDidChangeProposals = this.onDidChangeProposalsEmitter.event;
 
   constructor(
     private readonly store: SidecarRouter,
@@ -52,11 +56,16 @@ export class ProposalController implements vscode.Disposable {
     private readonly guard: VersionGuard,
   ) {
     this.disposables.push(this.statusItem);
+    this.disposables.push(this.onDidChangeProposalsEmitter);
     this.disposables.push(
       vscode.workspace.onDidChangeTextDocument((e) => this.onDidChange(e)),
     );
   }
 
+  private fireChanged(document: vscode.TextDocument): void {
+    this.onDidChangeProposalsEmitter.fire({ uri: document.uri.toString() });
+  }
+
   private isTracked(document: vscode.TextDocument): boolean {
     return isAuthorable(document.uri.scheme);
   }
@@ -64,6 +73,27 @@ export class ProposalController implements vscode.Disposable {
   private keyOf(document: vscode.TextDocument): string {
     return this.store.keyOf(docIdentity(document));
   }
+  /** The doc key F4 uses (F8 routing) — exposed for F10's preview. */
+  keyFor(document: vscode.TextDocument): string {
+    return this.keyOf(document);
+  }
+  /** Resolved proposal views for the F10 preview (anchorStart=null when unresolved). */
+  listProposals(document: vscode.TextDocument): ProposalView[] {
+    const docPath = this.keyOf(document);
+    const artifact = this.store.load(docPath) ?? emptyArtifact(docPath);
+    const text = document.getText();
+    return artifact.proposals.map((p) => {
+      const fp = artifact.anchors[p.anchorId]?.fingerprint;
+      const resolved = fp ? resolve(text, fp) : "orphaned";
+      return {
+        id: p.id,
+        anchorStart: resolved === "orphaned" ? null : resolved.start,
+        anchorEnd: resolved === "orphaned" ? null : resolved.end,
+        replaced: fp?.text ?? "",
+        replacement: p.replacement,
+      };
+    });
+  }
   private ensureState(document: vscode.TextDocument): DocState {
     const docPath = this.keyOf(document);
     let state = this.docs.get(docPath);
@@ -181,6 +211,7 @@ export class ProposalController implements vscode.Disposable {
       }
     }
     this.renderStatus(state);
+    this.fireChanged(document);
   }
 
   /** Shared-watcher entry point (extension.ts): a sidecar changed externally. */