Restores the legacy stdout/stderr auth-pattern fallback in
checkCursorAgentAvailability() that the plan's Task 2 Step 4
required but the implementation had dropped. Threads an optional
deps parameter through checkCursorConnectionIfNeeded() so its
error branch is reachable in tests, and switches both it and the
manual-refresh route to exhaustive switch statements over the
renewal result. Adds a short-lived host-keyed dedup cache around
tryIdeAuth() so multiple due Cursor connections sharing a host
don't each open the same state.vscdb file in one sweep tick.
Adds opportunistic eviction to the manual-refresh cooldown map,
an outer try/catch to the availability route for defense-in-depth
consistency with the plan's other routes, and corrects a stale
JSDoc claim about the /login route's auth check. Documents the
now-empirically-confirmed agent-cli-state.json schema mismatch
found while validating against a real cursor-agent install.
Builds the renewal orchestrator in src/lib/cursor/renewal.ts: a
bounded, unattended-safe --list-models nudge, a side-effect-free
status availability check, an in-flight spawn lock keyed by
command, and renewCursorConnection() which nudges cursor-agent
then independently re-scrapes the IDE and cursor-agent credential
sources to detect whichever refreshed. Extends cursorAgent.ts's
binary resolution and spawn helper with fixed-paths-only mode and
a SIGKILL follow-up for background use. Adds a generic keyed-mutex
utility (src/shared/utils/keyedMutex.ts) for serializing a
connection's renew-then-persist cycle, and forwards a busy-timeout
through driverFactory's node:sqlite fallback path.
Moves tryIdeAuth/tryAgentAuth and supporting helpers out of the
auto-import route into src/lib/cursor/tokenExtractor.ts, and adds
an agent-cli-state.json fallback candidate path to tryAgentAuth
(alongside the existing auth.json candidate) so the extraction
logic can be reused by the upcoming renewal orchestrator.
