Content review: consistent presentation, cross-section congruency, factual fixes

[yarikoptic-gitmate]

Presentation

• Tool and infrastructure pages now share one heading vocabulary (Key
  Features / Installation / Usage / git-annex / DataLad Integration / AI
  Readiness / Limitations / See Also), each with explicit "Integration
  level" and "Level" lines; twelve pages that lacked an AI Readiness
  section gained one; relative ../links became ref shortcodes; em dashes
  normalized to the site's "--" convention.
• Contributing guide updated to match this structure and to stop claiming
  a URL/front-matter CI check that does not exist.
• Section index pages now list every tool they contain (AgentsView,
  roborev, forge, kata, con/tinuous, datalad-container, msgvault, docbank).
• User stories use the site's "//" subdataset notation in all vault
  layouts, a common Status vocabulary, and a software-project diagram that
  matches the per-entity layout described beside it.

Broken links

• Agent pages under /concepts/agents/ were symlinks into .claude/agents,
  which Hugo does not follow, so they never rendered; replaced with a Hugo
  module mount of that directory.
• Frozen Frontiers anchors pointed at the homepage instead of /about/;
  /projects/self-contain-github-repo/ had no page; a vault-organization
  anchor did not exist; a ref was ambiguous with a tag.

Factual corrections (verified against upstream sources)

• Rewrote invented CLI usage, layouts, and claims on annextube,
  citations-collector, con/versations, wayslack2, matrix-archive,
  ccexport, cctrace, Claude Code Hooks, Entire.io, SpecStory, gh-md,
  gh-discussions-export, python-github-backup, con/tinuous, and
  Lab-in-a-Box; corrected commands on slackdump, mattermost export,
  git-bug, datalad-crawler, gallery-dl, yt-dlp, zoom, SingleFile,
  HTTrack, Browsertrix, ArchiveBox, copyparty, HedgeDoc, GIN, rclone.
• Fixed licenses (slackdump AGPL, git-ai Apache-2.0, kata MIT, wayslack
  BSD-2-Clause, Forgejo-Aneksajo GPL-3.0-or-later), repository moves,
  funding and affiliation attributions, DataLad sibling commands
  (create-sibling-gitea / -gin), git-annex option semantics (--or,
  import, bittorrent read-only), EMBER and BIDS PR references, and the
  DataLad concepts vocabulary description.
• Removed "DataLad-native" claims for tools whose upstream has no such
  integration and reclassified their integration level.

Co-Authored-By: Claude Fable 5.1 noreply@anthropic.com
Claude-Session: https://claude.ai/code/session_017Jy17cYJ41PhzwBDx8Fu78