fix: Address GitHub issues #511, #517, #527, #531 (#542)

* feat(docs): Add analysis reports for issues #514, #517, #520, #527, and #532

- Issue #514: Documented analysis of orphaned observer session files, including root cause, evidence, and recommended fixes.
- Issue #517: Analyzed PowerShell escaping issues in cleanupOrphanedProcesses() on Windows, with recommended fixes using WMIC.
- Issue #520: Confirmed resolution of stuck messages issue through architectural changes to a claim-and-delete pattern.
- Issue #527: Identified detection failure of uv on Apple Silicon Macs with Homebrew installation, proposed path updates for detection.
- Issue #532: Analyzed memory leak issues in SessionManager, detailing session cleanup and conversationHistory growth concerns, with recommended fixes.

* fix: address GitHub issues #511, #517, #527, #531

- #511: Add gemini-3-flash model to GeminiAgent (type, RPM limits, validation)
- #517: Replace PowerShell with WMIC for Windows process management (fixes Git Bash/WSL)
- #527: Add Apple Silicon Homebrew paths for bun and uv detection
- #531: Remove duplicate type definitions from export-memories.ts using bridge file

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* feat(docs): Add detailed reports for issues #511 and #531 addressing model validation and type duplication

* test: add regression tests for PR #542 fixes

Adds comprehensive regression tests for all 4 issues addressed in PR #542:

- #511: Add gemini-3-flash model tests to verify model acceptance and rate limiting
- #517: Add WMIC parsing tests for Windows process enumeration (23 tests)
- #527: Add Apple Silicon Homebrew path tests for bun/uv detection (18 tests)
- #531: Add export types tests to validate type interfaces (12 tests)

Total: 53 new tests, all passing. Addresses PR review feedback requesting test coverage.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

plugin/scripts/smart-install.js

@@ -32,7 +32,7 @@ function isBunInstalled() {
   // Check common installation paths (handles fresh installs before PATH reload)
   const bunPaths = IS_WINDOWS
     ? [join(homedir(), '.bun', 'bin', 'bun.exe')]
-    : [join(homedir(), '.bun', 'bin', 'bun'), '/usr/local/bin/bun'];
+    : [join(homedir(), '.bun', 'bin', 'bun'), '/usr/local/bin/bun', '/opt/homebrew/bin/bun'];
 
   return bunPaths.some(existsSync);
 }
@@ -56,7 +56,7 @@ function getBunPath() {
   // Check common installation paths
   const bunPaths = IS_WINDOWS
     ? [join(homedir(), '.bun', 'bin', 'bun.exe')]
-    : [join(homedir(), '.bun', 'bin', 'bun'), '/usr/local/bin/bun'];
+    : [join(homedir(), '.bun', 'bin', 'bun'), '/usr/local/bin/bun', '/opt/homebrew/bin/bun'];
 
   for (const bunPath of bunPaths) {
     if (existsSync(bunPath)) return bunPath;
@@ -102,7 +102,7 @@ function isUvInstalled() {
   // Check common installation paths (handles fresh installs before PATH reload)
   const uvPaths = IS_WINDOWS
     ? [join(homedir(), '.local', 'bin', 'uv.exe'), join(homedir(), '.cargo', 'bin', 'uv.exe')]
-    : [join(homedir(), '.local', 'bin', 'uv'), join(homedir(), '.cargo', 'bin', 'uv'), '/usr/local/bin/uv'];
+    : [join(homedir(), '.local', 'bin', 'uv'), join(homedir(), '.cargo', 'bin', 'uv'), '/usr/local/bin/uv', '/opt/homebrew/bin/uv'];
 
   return uvPaths.some(existsSync);
 }
@@ -156,7 +156,7 @@ function installBun() {
       // Try common installation paths
       const bunPaths = IS_WINDOWS
         ? [join(homedir(), '.bun', 'bin', 'bun.exe')]
-        : [join(homedir(), '.bun', 'bin', 'bun'), '/usr/local/bin/bun'];
+        : [join(homedir(), '.bun', 'bin', 'bun'), '/usr/local/bin/bun', '/opt/homebrew/bin/bun'];
 
       for (const bunPath of bunPaths) {
         if (existsSync(bunPath)) {
@@ -221,7 +221,7 @@ function installUv() {
       // Try common installation paths
       const uvPaths = IS_WINDOWS
         ? [join(homedir(), '.local', 'bin', 'uv.exe'), join(homedir(), '.cargo', 'bin', 'uv.exe')]
-        : [join(homedir(), '.local', 'bin', 'uv'), join(homedir(), '.cargo', 'bin', 'uv'), '/usr/local/bin/uv'];
+        : [join(homedir(), '.local', 'bin', 'uv'), join(homedir(), '.cargo', 'bin', 'uv'), '/usr/local/bin/uv', '/opt/homebrew/bin/uv'];
 
       for (const uvPath of uvPaths) {
         if (existsSync(uvPath)) {