docs(11.1-02): complete docs accuracy gates, theme and docs:serve plan

- SUMMARY with coverage, deviations and verification
- STATE, ROADMAP and REQUIREMENTS (DOCS-02, DOCS-04, DOCS-05, DOCS-08)
- deferred items: README summary backticks in leads

.planning/phases/11.1-summercms-documentation-for-humans-and-ai-agents/deferred-items.md

@@ -0,0 +1,6 @@
+# Phase 11.1 deferred items
+
+Out-of-scope discoveries logged by executors. Each names the plan that found it.
+
+- **11.1-02:** A module README summary line that contains inline code (for example conga's `summer_jobs`) becomes the page lead and meta description as plain text, so the lead shows raw backticks. The summary is taken verbatim by `splitReadme` (plan 11.1-01). Either strip backticks when a summary becomes a lead, or keep summary lines free of inline code.
+- **11.1-02:** `gofmt -l` lists `internal/build/registry.go`, as it did before this phase.