Implements the hub side of the shared reuse-event schema (already drafted
in WP-0018-T01, schemas/reuse-event.schema.json): a SQLite reuse_events
table, POST /v1/reuse-events (token-auth), GET /v1/reuse-events?capability_id=
(read-only).
reuse_surface/plan_check.py: refactored record_outcome around a new
shared post_or_fallback_reuse_event() helper -- tries the hub first, falls
back to the local JSONL only on failure/unreachability, never both. New
record_manual_reuse_event() backs a new CLI command, reuse-surface
record-reuse, for retroactive facts recorded outside plan-check.
Privacy/scope (repo slugs and capability ids only, no code, no secrets) is
enforced structurally via the schema's additionalProperties: false, not
just by convention.
21 new pytest cases, 145 total pass. Live-verified against a real running
hub instance: POST/GET /v1/reuse-events directly, record-reuse and
plan-check --record-outcome both posting successfully to the hub, and --
after actually killing the hub process -- confirmed the fallback path
writes correctly to the local JSONL instead of erroring.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
