Extension 0.6.0: next-edit, token healing, TS errors context, cursor-move, prewarm

- shared/nextedit.ts: next-edit prompt format (region rewrite or NO_EDIT, Qwen spare special tokens)
- shared/diagnostics.ts: TS errors near the cursor as context; symbols format 2 adds namespace imports
- shared/prompt.ts: token healing (cut the half-typed word, force it via grammar), errors header section
- daemon: model profiles carry contextFormat/errors/members/nextEdit; /v1/next-edit with edit-burst
  tracking; /v1/prewarm; /v1/debug/last; token healing on by default
- extension: next-edit decorations (Tab apply / Esc dismiss), suggest on cursor move, prewarm on focus,
  Show Last Prompt, update check against releases, diagnostics in the edit recorder
- models/README: training-data attribution; release script profiles for stage-d/stage-e
- .gitea/workflows/ci.yml: build + test, publish release on vscode-v* tags (needs a runner + RELEASE_TOKEN)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01J39imRDT8L7xYbWzsVWd8A

daemon/src/symbols.ts

@@ -1,6 +1,7 @@
 import { Worker } from 'node:worker_threads'
 import crypto from 'node:crypto'
-import type { SymbolsResult } from '../../shared/symbols.ts'
+import type { SymbolsResult as BaseSymbolsResult } from '../../shared/symbols.ts'
+export type SymbolsResult = BaseSymbolsResult & { errors?: string }
 import type { SymbolLang } from '../../shared/symbol-lang.ts'
 import type { WorkerRequest, WorkerResponse } from './symbols-worker.ts'
 
@@ -49,9 +50,11 @@ export class SymbolService {
     void this.call('warm', { root })
   }
 
-  async context(opts: { root: string; filePath: string; lang: SymbolLang; prefix: string; suffix: string; budget: number; members: boolean; waitMs: number }):
+  async context(opts: { root: string; filePath: string; lang: SymbolLang; prefix: string; suffix: string; budget: number; members: boolean; waitMs: number; format?: 1 | 2; errors?: boolean }):
     Promise<{ result: SymbolsResult | null; status: 'hit' | 'fresh' | 'stale' | 'none' }> {
-    const key = anchorKey(opts.filePath, opts.prefix, opts.members)
+    // Errors go stale as you type; refresh them at most every 20 s (a header change costs a cold prefill).
+    const errorsBucket = opts.errors ? `|e${Math.floor(Date.now() / 20_000)}` : ''
+    const key = `${anchorKey(opts.filePath, opts.prefix, opts.members)}|f${opts.format ?? 1}${errorsBucket}`
     if (this.cache.has(key)) {
       const result = this.cache.get(key)!
       this.lastForFile.set(opts.filePath, result)
@@ -59,6 +62,7 @@ export class SymbolService {
     }
     const request = this.inflight.has(key) ? null : this.call('context', {
       root: opts.root, filePath: opts.filePath, lang: opts.lang, visible: opts.prefix + opts.suffix, cursor: opts.prefix.length, budget: opts.budget, members: opts.members,
+      format: opts.format ?? 1, errors: opts.errors ?? false,
     })
     if (request) {
       this.inflight.add(key)
@@ -83,6 +87,15 @@ export class SymbolService {
     if (this.cache.size > 500) this.cache.delete(this.cache.keys().next().value!)
   }
 
+  /** TS errors near the cursor (formatted), for next-edit prompts. */
+  async errors(opts: { root: string; filePath: string; lang: SymbolLang; text: string; cursor: number; waitMs: number }): Promise<string | undefined> {
+    const r = await Promise.race([
+      this.call('errors', { root: opts.root, filePath: opts.filePath, lang: opts.lang, visible: opts.text, cursor: opts.cursor }),
+      new Promise<null>(r => setTimeout(() => r(null), opts.waitMs)),
+    ])
+    return (r?.result as string | undefined) ?? undefined
+  }
+
   async thisMember(opts: { root: string; filePath: string; lang: SymbolLang; prefix: string; suffix: string; waitMs: number }) {
     const r = await Promise.race([
       this.call('thisMember', { root: opts.root, filePath: opts.filePath, lang: opts.lang, visible: opts.prefix + opts.suffix, cursor: opts.prefix.length }),