Complete WP-0006 through WP-0009: registry expansion, catalog, graph, tests

Register six new capabilities (12 total), add searchable catalog UI and graph
explorer, introduce pytest suite with CI fail-on-warnings, and close gap
analysis priorities 13 and 16. WP-0010 remains backlog for network federation.

registry/capabilities/capability.statehub.progress-log.md

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+---
+id: capability.statehub.progress-log
+name: Work Progress Logging
+summary: Record progress events, decisions, and session notes against workstreams and tasks in State Hub.
+owner: state-hub
+status: draft
+domain: helix_forge
+tags: [state-hub, progress, coordination]
+
+maturity:
+  discovery:
+    current: D4
+    target: D5
+    confidence: medium
+    rationale: Progress API and agent session protocol are documented in state-hub AGENTS.md.
+  availability:
+    current: A4
+    target: A6
+    confidence: medium
+    rationale: Available via State Hub HTTP POST /progress/ endpoint.
+
+external_evidence:
+  completeness:
+    level: C3
+    name: Functional Core
+    confidence: medium
+    basis: scope_vs_intent_and_consumer_expectations
+    satisfied_expectations:
+      - progress events attach to workstreams
+      - agents can log session summaries
+    broken_expectations: []
+    out_of_scope_expectations:
+      - replacing git commit history
+  reliability:
+    level: R2
+    confidence: low
+    basis: consumer_quality_signals
+    known_reliability_risks:
+      - depends on hub availability
+
+discovery:
+  intent: Provide auditable progress memory for cross-repo agent and operator work.
+  includes:
+    - progress event creation
+    - workstream and task linkage
+    - author attribution
+  excludes:
+    - canonical workplan storage
+  use_cases: []
+
+availability:
+  current_level: A4
+  target_level: A6
+  current_artifacts:
+    - state-hub/api/
+  consumption_modes:
+    - service API
+
+relations:
+  depends_on:
+    - capability.statehub.workstream-coordinate
+  supports: []
+  related_to:
+    - capability.statehub.workstream-coordinate
+
+consumer_guidance:
+  recommended_for:
+    - closing agent sessions with hub progress notes
+  not_recommended_for:
+    - authoritative task status (use workplan files + fix-consistency)
+  known_limitations:
+    - hub must be running locally or via tunnel
+---
+
+# Work Progress Logging
+
+Progress logging complements file-backed workplans with live session memory in
+State Hub.