chore: estate-wide chore + stale-path sweep (2026-04-17)

Part of the estate-wide 2026-04-17 cleanup pass. Commits chore-safe
content only: docs, workflow YAML, gitignore, a2ml migration drift,
editorconfig, ncl. Dependency manifests (Cargo.toml/.lock, package.json,
mix.exs, etc.) and source files intentionally held back so no broken
intermediate states where a .rs commit splits from its Cargo.toml.

Also includes stale-path fixes for four ecosystem moves:
  hypatia       -> verification-ecosystem/hypatia
  echidna       -> verification-ecosystem/echidna
  ephapax       -> developer-ecosystem/nextgen-languages/ephapax
  panic-attacker -> games-ecosystem/panic-attacker

Staged files: 17
Held back (source / dep-manifests): 0

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: hyperpolymath

.gitignore

@@ -77,3 +77,11 @@ htmlcov/
 /tmp/
 *.tmp
 *.bak
+target/
+node_modules/
+_build/
+deps/
+.elixir_ls/
+.cache/
+build/
+dist/

claude-integrations/firefox-lsp/.gitignore

@@ -26,3 +26,15 @@ poly_ssg_lsp-*.tar
 # VSCode Extension
 vscode-extension/node_modules/
 vscode-extension/out/
+target/
+node_modules/
+_build/
+deps/
+.elixir_ls/
+.cache/
+*.log
+*.tmp
+.DS_Store
+Thumbs.db
+build/
+dist/

claude-integrations/firefox-mcp/.gitignore

@@ -77,3 +77,11 @@ htmlcov/
 /tmp/
 *.tmp
 *.bak
+target/
+node_modules/
+_build/
+deps/
+.elixir_ls/
+.cache/
+build/
+dist/

claude-integrations/gecko-browser-extension/.gitignore

@@ -28,3 +28,11 @@ node_modules/
 *.key
 *.pem
 secrets.json
+target/
+_build/
+deps/
+.elixir_ls/
+.cache/
+*.tmp
+build/
+dist/

claude-integrations/gitlab-bridge/.gitignore

@@ -77,3 +77,11 @@ htmlcov/
 /tmp/
 *.tmp
 *.bak
+target/
+node_modules/
+_build/
+deps/
+.elixir_ls/
+.cache/
+build/
+dist/

claude-integrations/mozilla-extension/.gitignore

@@ -77,3 +77,11 @@ htmlcov/
 /tmp/
 *.tmp
 *.bak
+target/
+node_modules/
+_build/
+deps/
+.elixir_ls/
+.cache/
+build/
+dist/

did-you-actually-do-that/.gitignore

@@ -22,3 +22,13 @@ dyadt_brain/.elixir_ls/
 
 # Crash recovery artifacts
 ai-cli-crash-capture/
+target/
+node_modules/
+_build/
+deps/
+.elixir_ls/
+.cache/
+*.log
+*.tmp
+build/
+dist/

did-you-actually-do-that/dyadt_brain/.gitignore

@@ -22,3 +22,15 @@ erl_crash.dump
 # Ignore package tarball (built via "mix hex.build").
 dyadt_brain-*.tar
 
+target/
+node_modules/
+_build/
+deps/
+.elixir_ls/
+.cache/
+*.log
+*.tmp
+.DS_Store
+Thumbs.db
+build/
+dist/

echomesh/.gitignore

@@ -67,3 +67,6 @@ lib/bs/
 
 # Crash recovery artifacts
 ai-cli-crash-capture/
+.elixir_ls/
+.cache/
+Thumbs.db

elegant-state/.gitignore

@@ -80,3 +80,11 @@ htmlcov/
 
 # Crash recovery artifacts
 ai-cli-crash-capture/
+target/
+node_modules/
+_build/
+deps/
+.elixir_ls/
+.cache/
+build/
+dist/