Add cross-platform packaging, icons, and Claude Code config discovery

- Auto-discovers Claude Code (~/.claude/settings.json) alongside Claude Desktop
- Generated icons/app.icns (macOS) and icons/app.ico (Windows) from rounded PNGs
- bcc.spec: PyInstaller spec for all platforms (.app on macOS, onefile on Windows/Linux)
- .github/workflows/release.yml: builds and publishes GitHub Release on version tags
- scripts/build_icons.py: regenerates icon files from source PNGs
- requirements-dev.txt: adds pyinstaller and pillow for building
- CLAUDE.md: initial repo guidance for Claude Code

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

test_core.py

@@ -18,7 +18,8 @@ for d in ("Claude", "Claude-Work", "NotClaude"):
 c.app_support_base = lambda: base
 profs = c.discover_profiles()
 labels = sorted(p.label for p in profs)
-check("discovers Claude + Claude-Work, not NotClaude", labels == ["Claude", "Claude-Work"])
+check("discovers Claude + Claude-Work, not NotClaude",
+      "Claude" in labels and "Claude-Work" in labels and "NotClaude" not in labels)
 check("flags missing config file", any(p.label=="Claude-Work" and not p.config_exists for p in profs))
 
 # ---- 2. write preserves OTHER keys + order, only touches mcpServers ----