Sync latest TrueGrowth updates

openspec/changes/replace-funclip-with-videoagent-clip-workbench/proposal.md

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+# Change: Replace FunClip clip center with VideoAgent workbench
+
+## Why
+The current FunClip-based clip center has not completed a reliable editing loop, and its clipping model is too narrow for a commercial AI video production workflow. TrueGrowth needs the clip center to start from user intent and source media, then produce plans, transcripts, segments, packaged outputs, and publishing assets through a broader VideoAgent-style runtime.
+
+## What Changes
+- **BREAKING**: Move the customer-facing AI clip workbench primary provider from `funclip-local` to `videoagent-local`.
+- Add a local VideoAgent sidecar contract with readiness, start/stop, task submission, polling, and asset-writing endpoints.
+- Replace the fixed capability-card-first flow with an intent-first workflow: source media, natural-language goal, business scene, output package, generated plan, execution, and deliverables.
+- Expose customer-facing capability groups for basic clipping, video understanding, creative remaking, and voice/audio processing without showing third-party runtime names.
+- Keep FunClip only as a hidden migration fallback where needed; it must not define visible product capability or user copy.
+
+## Impact
+- Affected specs: `ai-clip-workbench`
+- Affected code: `scripts/truegrowth-local-api.mjs`, `apps/web/src/workbench/WorkbenchShell.tsx`, `apps/web/src/workbench/workbench.scss`
+- Runtime integration: new `/local-api/videoagent*` local API family, replacing visible `/local-api/funclip/tasks` usage in the clip workbench