Resolve tmux-utils.ts conflict: rewrite resolvePipePath to read
runtimeHandle.data.pipePath from on-disk session metadata instead of
recomputing a hash from AO_CONFIG_PATH. Mirrors the storageKey
disambiguation pattern upstream introduced for resolveTmuxSession in
PR #1488 (eca3001c). Recomputing the hash drifted from the runtime's
deriveStorageKey on Windows (raw backslash paths vs POSIX-normalized),
so the dashboard's named-pipe relay was connecting to the wrong path
and falling back to ENOENT while ao session attach worked fine.
Also normalize path separators in 6 upstream resolveTmuxSession tests
that hard-coded Unix forward slashes in their exists() mocks; on
Windows path.join produces backslashes and the assertions never
matched.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
f0eec60dfb