docs: generated cordis events + services catalog

Add scripts/gen-cordis-catalog.ts: a fully-generated docs/cordis-catalog/
events-and-services.md cataloging every cordis event (exact signature + @mode)
and ctx.<key> service (exact interface), modeled on gen-module-graph's
--write/--check freshness gate. The harness tier renders in full from the
interface Events / interface Context declarations and their JSDoc; the inherited
cordis-core/loader/hmr/timer surface renders tersely from a curated table.

The generator hard-errors on a missing @mode tag and on a tag that contradicts
a conclusive signature shape (a trailing next param is structurally a
waterfall). Signature blocks use a ts cordis-catalog fence that doc-typecheck
skips. Type tokens cross-link to the core-data-structures catalog.

This supersedes the hand-maintained event-taxonomy table: verify-event-taxonomy
is deleted and verify-cordis-catalog joins doc-sync. architecture.md keeps the
Event taxonomy heading (TOC anchor) but points at the catalog; the Service-map
role table stays. RFC, AGENTS.md @mode authoring rule, and dependent doc/skill
references updated. Negative gate tests cover the missing-tag and
tag/shape-contradiction paths.

docs/rfc/README.md

@@ -62,6 +62,7 @@ Do NOT write one for a mechanical or local choice (a variable name, a one-file r
 | [Drop the mutable session summary](implemented/2026-06-19-drop-mutable-session-summary.md) | 2026-06-19 |
 | [Shared persistence write coordinator](implemented/2026-06-18-shared-persistence-write-coordinator.md) | 2026-06-18 |
 | [Agent lifecycle and ownership seams](implemented/2026-06-18-agent-lifecycle-and-ownership-seams.md) | 2026-06-18 |
+| [Generated cordis events + services catalog](implemented/2026-06-20-generated-cordis-catalog.md) | 2026-06-20 |
 
 ## Rejected