Fix citation navigation to parsed chunk list

[suguanYang]

Summary

• Route citation-driven source navigation through an explicit parsed-list request so source-only or unresolved citations do not leave the chunks panel in tree mode.
• Preserve the existing tree default for normal source selection.
• Add regression coverage for product-manual-style source/image citations.

Verification

• ./node_modules/.bin/vitest run src/components/chunks-panel.test.ts src/components/workspace-citation-focus.test.ts src/components/workspace-shell.test.ts src/components/workspace-shell-layout.test.ts src/components/chat-message-list.test.ts src/components/chat-panel.test.ts
• ./node_modules/.bin/tsc --noEmit
• ./node_modules/.bin/eslint
• ./node_modules/.bin/next build
• git diff --check origin/main..HEAD

Notes: tsc still prints the existing Effect JSON advisory in src/integrations/knowhere-demo.ts. eslint still prints the existing unused Source warning in src/domains/sources/route-upload.ts. next build still warns that it patched missing SWC lockfile entries and inferred /home/suguan as the workspace root; generated package-lock churn was not kept.

[vercel]

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Project	Deployment	Actions	Updated (UTC)
knowhere-notebook-staging	Ready	Preview, Comment	Jun 14, 2026 5:09pm

1 Skipped Deployment

Project	Deployment	Actions	Updated (UTC)
knowhere-notebook	Ignored		Jun 14, 2026 5:09pm