feat: online verification, node removals, and knowledge browser

Adds claim-bound online evidence records and citation verification scripts,
node removal transport/adapter, retrieval benchmark and owner-review tooling,
GraphCanvas/SourceDetail knowledge browser UI, and the ingest handoff helper.
Bumps the agents/gewu pack to the online-verification branch.

docs/README.md

@@ -12,6 +12,8 @@ For a local setup and first browser session, start with the [getting started gui
 
 Start delivery planning with the [implementation plan](IMPLEMENTATION_PLAN.md): work packages, pilot/full-v1 boundaries, decision gates and PRD traceability.
 
+For the project knowledge UI, use the [knowledge browser implementation plan](KNOWLEDGE_BROWSER_PLAN.md): Luna's handoff for browsing, node details and cross-links, and graph exploration.
+
 1. [Reference review](reviews/ARCHITECTURE_REFERENCE_REVIEW.md): which practices to borrow, adapt or reject.
 2. [Architecture](architecture/ARCHITECTURE.md): components, technology choices, alternatives and deployment.
 3. [Acceptance and evidence contract](architecture/ACCEPTANCE_CONTRACT.md): records, authority, replay, crash recovery and source integrity.
@@ -24,6 +26,8 @@ Start delivery planning with the [implementation plan](IMPLEMENTATION_PLAN.md):
 
 The [independent architecture review](reviews/ARCHITECTURE_SENIOR_REVIEW.md) records findings and corrections for the v0.2 acceptance foundation. The [local-agent and modularity addition](reviews/LOCAL_AGENT_MODULARITY_REVIEW.md) records the v0.3 scope and verification separately.
 
+The project knowledge browser implementation and remaining acceptance work are tracked in the [knowledge browser plan](KNOWLEDGE_BROWSER_PLAN.md) and [acceptance note](acceptance/2026-10-16-knowledge-browser.md).
+
 ## Decision status
 
 | Status | Meaning here |