Improve codex-local adapter: skill injection, stdin piping, and error parsing

Codex adapter now auto-injects Paperclip skills into ~/.codex/skills,
pipes prompts via stdin instead of passing as CLI args, filters out noisy
rollout stderr warnings, and extracts error/turn.failed messages from
JSONL output. Also broadens stale session detection for rollout path
errors. Claude-local adapter gets the same template vars (agentId,
companyId, runId) that codex-local already had.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/adapters/codex-local/src/index.ts

@@ -2,6 +2,7 @@ export const type = "codex_local";
 export const label = "Codex (local)";
 
 export const models = [
+  { id: "gpt-5", label: "gpt-5" },
   { id: "o4-mini", label: "o4-mini" },
   { id: "o3", label: "o3" },
   { id: "codex-mini-latest", label: "Codex Mini" },
@@ -25,4 +26,8 @@ Core fields:
 Operational fields:
 - timeoutSec (number, optional): run timeout in seconds
 - graceSec (number, optional): SIGTERM grace period in seconds
+
+Notes:
+- Prompts are piped via stdin (Codex receives "-" prompt argument).
+- Paperclip auto-injects local skills into Codex personal skills dir ("$CODEX_HOME/skills" or "~/.codex/skills") when missing, so Codex can discover "$paperclip" and related skills.
 `;