Three problems, one root cause each:
1. Sidebar jump: the server rendered its own default (current section
open, rest collapsed) and restoreDocsNav corrected it after paint —
open-then-close. Fix: persistence moved server-side. toggleCollapsible
now writes a docs_nav cookie (strictly-necessary UI state, no
identifiers, SameSite=Lax); ApplyNavOverrides merges it into the nav
before render, so first paint IS the visitor's state. The post-paint
restore is deleted.
2. Arrows out of sync / double-click: two visibility mechanisms
disagreed. There was NO data-collapsed CSS at all — collapsed sections
were only ever hidden by JS after paint, and the arrow rotation came
from a different (server) state. Now: style.css hides on
[data-collapsed=true] (single source of truth, server-rendered),
applyCollapsed sets only the attribute, arrows rotate from the same
merged value. Live check: 37/37 collapsibles arrow-consistent.
3. api-reference.md links: all 20+ quick links were directory-style
(authentication/ etc.) that 404 on the docs site, plus stale targets
(books/, ../collections-api.md, websocket 'coming soon'). Rewritten to
real per-file links — all 9 unique targets return 200 live. Same rot
fixed in admin/hash-conflicts.md, development.md, android-app.md,
create_media_item.md, koreader-protocol.md; docs/index.md redirected
from the deleted collections-api monolith (stale 530-line duplicate of
the gated api/collections docs — deleted, per the WO2 doctrine).
New gate: TestDocsRelativeLinks walks docs/developer/** and fails make
test on any relative link that is directory-style or unresolvable —
overview links can never silently rot again.
PROJECT_GUIDELINES.md had drifted out of reality (podman-only rule
while the stack runs docker; verifier scripts wired to Makefile targets
nobody runs). Trashed it, its two verifier scripts, and the Makefile
targets; the rules that still matched reality (docker runtime, schema
in place until release, server binary only via Docker, services layer,
integration-test pool rules) are absorbed into the new AGENTS.md.
The library-visibility family-lens rule now has a real home:
- AGENTS.md: the standing rule agents auto-discover (new media
endpoints MUST thread the visible-library set; 403, never silently
pass; history of the 2026-10-13 leak).
- docs/developer/library-visibility.md: the full explanation (helpers,
SQL pattern, per-item content gates, series per-library), linked
from the developer docs index.
Stale doc links updated (docs index, contributing, development).
- Renamed root INDEX.md to index.md (lowercase)
- Changed navigation title from "Documentation Index" to "Index"
- Removed caps lock for cleaner appearance
- Renamed subdirectory INDEX.md files to section-specific names:
- user/INDEX.md → user/user-guide.md
- developer/INDEX.md → developer/development.md
- operations/INDEX.md → operations/operations.md
- contributing/INDEX.md → contributing/contributing.md
- developer/api/INDEX.md → developer/api/api-reference.md
- developer/api/collections/INDEX.md → developer/api/collections/collections-api.md
- Updated all internal links to use new filenames
- Updated navigation.go to skip subdirectory INDEX files from sidebar
- Added Dockerfile to include docs directory in container build
This fixes the issue where multiple 'INDEX' links appeared in the sidebar,
making navigation confusing. Now each section has a descriptive name.