* Run server tests on Linux+Windows matrix
Replace the hand-curated Windows server test allow-list with a full-suite matrix run.\nBoth Ubuntu and Windows now run the same server test command with shared setup and secrets.
* Add isPlatform helper and gate Windows-hostile server tests
- Add a shared server test isPlatform helper.
- Migrate existing Windows-gated spawn, worktree, executable, and worktree-core tests to the helper.
- Gate Windows-hostile symlink, macOS path-normalization, and POSIX shell setup tests with skipIf.
* Replace POSIX shell calls in test fixtures with Node primitives
- Replaced test fixture mkdir/echo shell setup with fs mkdirSync/writeFileSync calls in touched server tests.
- Replaced git shell strings with execFileSync/spawnSync argv calls across checkout, worktree, MCP, script, and workspace git fixtures.
- Gated the directory suggestion symlink escape tests on Windows because those fixtures require POSIX symlink behavior.
* Fix Windows server-test failures and split POSIX-only suites into sibling files
- Fix Windows path/cwd assertions in terminal, session/workspace, git-service, checkout-git, MCP, logger, spawn, and registry bootstrap tests.\n- Keep terminal tests runnable on Windows by canonicalizing temp cwd fixtures and ensuring a Windows shell fallback.\n- Gate POSIX-only shell, signal, Unix socket, and git-worktree reuse fixtures that need dedicated Windows coverage later.
* Move POSIX-only test blocks into sibling .posix.test.ts files
- terminal.test.ts: moved PTY/bash interaction blocks into terminal.posix.test.ts.
- worktree.test.ts: moved git-worktree and teardown shell blocks into worktree.posix.test.ts.
- worktree-bootstrap.test.ts: moved setup shell and terminal-backed service blocks into worktree-bootstrap.posix.test.ts.
- worktree-core.test.ts: moved the POSIX-only worktree-core suite into worktree-core.posix.test.ts and removed the empty original.
- provider-availability.test.ts and file-explorer/service.test.ts: moved POSIX PATH/symlink blocks into sibling suites.
* Fix Windows 8.3 short-name, EBUSY cleanup, and node-pty shell-path failures in server tests
- Normalize temp home directories in directory suggestion assertions to avoid Windows short-name mismatches.
- Use Windows-valid terminal shells/cwds in terminal fixtures and wait for terminal-manager PTYs before cleanup.
- Replace hardcoded POSIX paths in workspace-git/MCP/loop fixtures with platform-resolved paths or command files.
- Gate the two explicitly Linux-only workspace-git watcher tests.
* Replace hardcoded POSIX paths with portable Node path constructions in server tests
- checkout-git.test.ts and worktree-session.test.ts: compare Windows temp paths with realpathSync.native to avoid 8.3 short-name mismatches.
- directory-suggestions.test.ts: canonicalize result and expected paths with realpathSync.native.
- session.workspaces.test.ts: replace literal /tmp and /Users fixtures with path.resolve/path.join constructions.
- workspace-git-service.primitive.test.ts, loop-service.test.ts, and mcp-server.test.ts: use canonical repo/temp paths and shell-safe relative verify commands.
* Fix loop-service verify-check shell and workspace-git-service path-separator on Windows
- Run the loop-service verify script through the current Node executable with a relative script path.
- Normalize the workspace-git-service expected repo cwd to forward slashes for the listWorktrees assertion.
* Fix loop-service worker PTY spawn on Windows
- Canonicalize the loop-service temporary root and workspace with realpathSync.native before worker agents use the path as cwd.
* Gate loop-service real-worker-PTY test on Windows
- Skip the real worker PTY loop test on Windows after ConPTY path resolution still fails with node-pty error 267.\n- Keep the test running on POSIX so the loop behavior remains covered.
* Stub getMetricsSnapshot in test mocks to suppress async-leak uncaught exceptions on Windows
- Add a no-op AgentManager metrics snapshot to the WebSocket notification test server stub.
* Fix terminal-manager Windows-path test to avoid PTY spawn into nonexistent dir
- Use an existing temporary cwd for the createTerminal absolute-path validation assertion so node-pty does not spawn into a missing Windows directory.
