chore(gitea): regenerate the flat content mirror after the ADR-0020 retrofit

Generated output, not authored content: scripts/sync-plugin-content.sh --all.
Claude Code has no .apm/ awareness, so this compiled mirror must track .apm/ or
the check-plugin-content-sync pre-push hook reports drift.

Deferred to a single commit at the end of the wave on purpose. sync_dir runs
rm -rf before every copy, so running it while seven agents were editing the
same plugin would have raced them; agents were told not to sync for that reason.

Refs #99

plugins/gitea/skills/gitea-workflow/references/sources.md

@@ -3,9 +3,9 @@
 ## gitea-mcp-repo
 
 - **URL:** https://gitea.com/gitea/gitea-mcp
-- **Description:** Official gitea-mcp repository (v1.3.0) — `operation/*.go` source files documenting all 55 MCP tools. This skill's status view relies on `list_issues`/`list_pull_requests` semantics (via `gitea-issues`/`gitea-prs`), and its ambiguous-number resolution relies on `issue_read`'s `is_pull` field, both verified against this source at authoring time.
+- **Description:** Official gitea-mcp repository (v1.3.0) — `operation/*.go` source files documenting all 55 MCP tools. This skill's status view relies on `list_issues`/`list_pull_requests` semantics (via `gitea-issues`/`gitea-prs`), its ambiguous-number resolution relies on `issue_read`'s `is_pull` field, and its domain-skill index groups that tool surface by owning skill — all verified against this source at authoring time.
 - **Research doc:** plugins/gitea/docs/research/docs/gitea/sources.md
-- **Contributing files:** SKILL.md
+- **Contributing files:** references/status-checkin.md, references/number-resolution.md, references/skill-index.md
 - **Status:** `extracted`
 
 ## gitea-mcp-slim-go
@@ -13,7 +13,7 @@
 - **URL:** https://gitea.com/gitea/gitea-mcp/raw/branch/main/operation/issue/slim.go
 - **Description:** Slim response shape structs from gitea-mcp source — confirms `is_pull` is present on a single-item `issue_read` response, the field this skill's resolution step depends on to distinguish an issue from a PR sharing the same number.
 - **Research doc:** plugins/gitea/docs/research/docs/gitea/sources.md
-- **Contributing files:** SKILL.md
+- **Contributing files:** references/number-resolution.md
 - **Status:** `extracted`
 
 ## context7-websites-gitea
@@ -21,7 +21,7 @@
 - **URL:** context7:/websites/gitea
 - **Description:** Official Gitea docs mirror on Context7 — confirms issues and pull requests share a single per-repository number sequence, and that Gitea returns 404 for permission failures rather than a distinct 403, both facts this skill's resolution and error-handling steps depend on.
 - **Research doc:** plugins/gitea/docs/research/docs/gitea/sources.md
-- **Contributing files:** SKILL.md
+- **Contributing files:** references/number-resolution.md
 - **Status:** `extracted`
 
 ## context7-gitea-tea-cli