Expose recorded Workspace artifacts in the Demo Files panel

[luokerenx4]

What changed

• assign every readable demo artifact to its owning Workspace
• build root and nested directory listings from that artifact index, including byte sizes and fresh demo-session timestamps
• preserve the production directory contract by sorting folders first and rejecting parent-directory traversal
• add handler coverage for the featured AAPL report, nested Chat notes, complete artifact indexing, and traversal rejection

Why

The featured AAPL Session says it saved the full earnings note into the Workspace, and the demo already serves that report through the file-read endpoint. However, the directory-listing handler always returned an empty array, so opening the same Workspace's Files panel showed empty. The same disconnect hid the research notes used by Tracked and scheduled-report fixtures.

User impact

Demo visitors can now browse the artifacts the recorded Sessions claim to create: the AAPL report appears in its Workspace root, Chat notes expose a navigable rotation/ directory, and clicking a listed file opens the existing viewer with its Session return path intact.

Validation

• pnpm exec vitest run ui/src/demo/handlers/workspaces-files.spec.ts (4 passed)
• npx tsc --noEmit
• cd ui && npx tsc -b
• pnpm test (358 files passed, 1 skipped; 3392 tests passed, 9 skipped)
• pnpm -F open-alice-ui build:demo
• real Chinese demo walkthrough: AAPL Session -> Files -> research-AAPL-q1.md; verified the report opens with sessionId=demo-session
• real Chinese demo walkthrough: Chat Workspace -> Files -> rotation/; verified all three nested research notes are listed

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Project	Deployment	Actions	Updated (UTC)
openalice-demo	Ready	Preview, Comment	Jul 29, 2026 5:39am