feat: Release Version 0.21.2

[0.21.2] — 2026-08-03

Changed

• Claude plugin files moved into integrations/claude/.
  .claude-plugin/, commands/, skills/, and .mcp.json were
  cluttering the repo root; they're now grouped under
  integrations/claude/ (integrations/claude/.claude-plugin/,
  integrations/claude/commands/, integrations/claude/skills/,
  integrations/claude/.mcp.json), leaving room for other editor
  integrations alongside it under integrations/. Pure source-tree
  reorg — the wheel's dekko/_plugin/ layout (what
  dekko --claude-install actually uses) is unchanged, so installed
  users see no difference.

[0.21.1] — 2026-08-03

Fixed

• Documented why dekko://summary stays unbounded. An audit of
  skills//commands/ flagged the MCP resource's uncapped output as
  an apparent inconsistency with the summary tool's ~2000-token
  default. It's intentional, not a bug: a resource is fetched by
  reference on demand rather than re-sent as cache on every
  conversation turn like a tool result, so the token-bloat concern
  that justified capping the tool doesn't apply. Added a comment on
  _handle_resources_read explaining the asymmetry; no behavior
  change (see test_mcp_summary_resource_stays_unbudgeted).

[0.21.0] — 2026-08-03

Added

• Persistent .dekko/.dekkoignore. dekko map --exclude GLOB
  now also appends each new pattern to .dekko/.dekkoignore (created
  and tracked alongside notes.json), so exclusions survive as
  project state instead of shell history — a bare dekko map with no
  flags honors patterns persisted by an earlier --exclude run.
  .dekkoignore is hand-editable gitignore syntax (comments,
  negation, **, trailing-slash dir patterns), parsed with
  pathspec/gitwildmatch — a different matching engine than
  --exclude's plain fnmatch, so files it skips are reported under
  a distinct "ignored" skip reason (--exclude keeps "excluded").
  Note the resulting matching-semantics divergence for
  extension-filtered directory patterns: --exclude 'dir/*.py'
  reaches into dir/sub/nested.py today (fnmatch isn't slash-aware),
  but the identical string persisted to .dekkoignore only matches
  the direct child once re-parsed as gitwildmatch. regen_map/
  --if-stale auto-regen never re-persist; staleness from a hand-edit
  falls out of the existing freshness check with no new provenance
  field.
• Community health files: CODE_OF_CONDUCT.md, SECURITY.md,
  .github/ISSUE_TEMPLATE/ (bug report, feature request), and
  .github/PULL_REQUEST_TEMPLATE.md.
• README: a "Why dekko?" section with the headline benchmark
  numbers and a comparison to ctags/gtags-style navigation, plus
  downloads/ruff badges.
• pyproject.toml keywords extended with llm-agents,
  codebase-indexing, model-context-protocol to match the GitHub
  topics used for discovery.