Support default namespace document compatibility

[suguanYang]

Summary

• Sends new Notebook uploads to Knowhere namespace default with safe documentMetadata for display/client origin.
• Lists compatible published Knowhere documents from both default and the legacy workspace namespace, then localizes those documents into regular Notebook sources rows before UI, chunks, archive, and chat flows use them.
• Removes the synthetic knowhere-doc:* remote source action path; chunk/archive routes now require a localized Notebook source row or a canonical demo source.
• Adds a workspace/document unique partial index so localization is idempotent by workspace_id + knowhere_document_id for live rows.
• Preserves active Notebook upload reconciliation state during localization so rows with a local parsing job keep their knowhereJobId until the existing job workflow stores parse assets and marks the source ready.
• Queries chat retrieval across default plus the legacy workspace namespace and merges successful retrieval responses.
• Uses the SDK-shaped job creation contract for upload metadata and stores the planned Knowhere documentId directly when job creation returns it.

Companion backend PR: Ontos-AI/knowhere#177
Companion SDK PR: Ontos-AI/knowhere-node-sdk#99

Testing

• ./node_modules/.bin/vitest run src/domains/sources/route-service.test.ts src/domains/sources/source-row-repository.test.ts 'src/app/api/sources/[sourceId]/route.test.ts' 'src/app/api/sources/[sourceId]/chunks/route.test.ts' src/domains/workspace/initial-state.test.ts src/domains/chat/route-service.test.ts src/domains/chat/index.test.ts src/domains/sources/upload.test.ts src/integrations/knowhere.test.ts
• ./node_modules/.bin/tsc --noEmit --pretty false
• changed-file ./node_modules/.bin/eslint ...
• git diff --check

Notes:

• Notebook AGENTS asks to consult effect-solutions for Effect changes, but effect-solutions is not installed on this machine (command not found), so this follows existing local Effect patterns.

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Project	Deployment	Actions	Updated (UTC)
knowhere-notebook-staging	Ready	Preview, Comment	Jun 26, 2026 7:12pm

1 Skipped Deployment

Project	Deployment	Actions	Updated (UTC)
knowhere-notebook	Ignored	Preview	Jun 26, 2026 7:12pm