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Hermes Agent	7f987f52fc	fix(mosaic): harden claudex proxy preflight per review (P1 of #790) ... Addresses the four findings from the independent review of #793 (exact head 0e41a5c2). TDD: each fix's failing test was added first (18 new tests), then the implementation; full mosaic suite 1098 green, three gates green. 1. nohup fallback async spawn error (correctness): spawn() reports ENOENT/EACCES asynchronously via the child 'error' event, which the old try/catch could not see -> an unhandled 'error' would crash the launcher, and it returned status 0 before the child had started. Extract startNohupProxy(): attach the 'error' listener BEFORE unref(), resolve non-zero on async error/sync throw, and resolve success only after a confirmed 'spawn'. startNohup dep is now async. 2. systemd start not socket-bound (correctness): `systemctl --user start` exit 0 means the job was accepted, not bound within one probe. ensureProxyRunning now polls liveness to a bounded startupDeadlineMs after a start before falling back, so a slow systemd bind can't trigger a second, contending proxy. 3. liveness trust (security, CWE-345): probeLiveness hit the root and trusted ANY HTTP response, so a local port-squatter could be taken for the proxy and MITM Claude traffic. Now probe the proxy-specific GET /healthz and require a 2xx. This also resolves gotcha #1 (root returns non-2xx): /healthz returns 2xx when healthy, so a live proxy is never mistaken for dead. (Upstream offers no unix socket or shared-secret handshake; /healthz is the in-scope identity ceiling.) 4. systemd ExecStart injection (security, CWE-74): buildSystemdUnitContent interpolated binaryPath raw, so a CR/LF could inject unit directives. Validate the path (absolute, reject control chars) and systemd-quote it when it carries whitespace/quotes; installSystemdUnit now refuses to write a poisoned unit. Coverage on claudex-proxy.ts: 96.3% stmts/lines, 87.1% branch. Refs #790	2026-07-16 15:13:46 -05:00
Hermes AgentandClaude Opus 4.8	0e41a5c264	feat(mosaic): claudex proxy preflight + lifecycle helpers (P1 of #790) ... P1 of the `mosaic yolo claudex` launcher (#790): pure, dependency-injected preflight and lifecycle helpers for `raine/claude-code-proxy` (the local Anthropic->Codex translation proxy on 127.0.0.1:18765). No session launch yet; the isolated CLAUDE_CONFIG_DIR composition + env-injection land in PR-2. Authored test-first (spec written and run red before implementation, then green). 39 unit tests, 89.6% statement/line coverage on the new module; the only uncovered lines are the process-spawning system wrappers (systemd/nohup/wait), which are integration glue unsuitable for unit spawning. Helpers: - checkProxyBinary — binary presence via an injectable `which` resolver. - parseAuthStatus / checkAuthStatus — coarse OAuth state from `codex auth status`. Carries NO token material (state + optional expiry only) so token-shaped output can never leak downstream. - runDeviceReauth — `codex auth device` with stdio:'inherit' so the device code streams to the user's TTY; the launcher never captures/logs it or sees the resulting token. - probeLiveness — gotcha #1: ANY HTTP response (incl. non-2xx) = alive; only a transport failure/timeout = dead. NEVER `curl -f` (that spawned duplicate proxies). Bounded by an explicit timeout race so a hung socket can't wedge. - buildSystemdUnitContent / systemdUnitPath / installSystemdUnit — systemd --user unit management; unit carries no credential material. - runProxyPreflight — structured binary+auth+liveness report. - ensureProxyRunning — no-op when live, else systemd-preferred with nohup fallback, re-probing after each attempt so it never spawns a duplicate. Refs #790. Not part of the #758 fleet DAG. Co-Authored-By: Claude Opus 4.8 <[email protected]>	2026-07-16 14:37:09 -05:00