fix(bird_x): pass .env credentials to Node subprocesses for WSL2/headless auth

* chore: fix YAML error in argument-hint

* add codex auth support to responses API

* Use gpt-5.1-codex-mini as default model for Codex auth

Add CODEX_FALLBACK_MODELS chain (gpt-5.1-codex-mini → gpt-5.2) for
Codex endpoint which doesn't support standard OpenAI models like
gpt-4o-mini. Adds model fallback retry on 400 errors in the Codex
search path. Also adds test_codex_auth.py with 22 unit tests covering
JWT decoding, auth resolution, SSE parsing, and payload building.

* Pass .env credentials to Bird Node subprocesses for X auth

On platforms without browser cookie access (e.g. WSL2), Bird's
vendored Node.js module cannot read AUTH_TOKEN/CT0 from Firefox
or Chrome cookie stores. The .env config file already supports
these values, but they were only loaded into the Python config
dict — never exported to the environment of Node subprocesses.

- Add AUTH_TOKEN/CT0 to env.py config key loading
- Add set_credentials()/\_subprocess_env() to bird_x.py to inject
  credentials into the env dict passed to subprocess.run/Popen
- Call set_credentials() in main() before Bird auth detection

---------

Co-authored-by: Justin Williams <jblwilliams@gmail.com>

scripts/lib/render.py

@@ -4,7 +4,7 @@ import json
 import os
 import tempfile
 from pathlib import Path
-from typing import List, Optional
+from typing import Optional
 
 from . import schema
 
@@ -101,10 +101,11 @@ def render_compact(report: schema.Report, limit: int = 15, missing_keys: str = "
         lines.append("**🌐 WEB SEARCH MODE** - assistant will search blogs, docs & news")
         lines.append("")
         lines.append("---")
-        lines.append("**⚡ Want better results?** Add API keys to unlock Reddit & X data:")
-        lines.append("- `OPENAI_API_KEY` → Reddit threads with real upvotes & comments")
+        lines.append("**⚡ Want better results?** Add API keys or sign in to Codex to unlock Reddit & X data:")
+        lines.append("- `OPENAI_API_KEY` or `codex login` → Reddit threads with real upvotes & comments")
         lines.append("- `XAI_API_KEY` → X posts with real likes & reposts")
         lines.append("- Edit `~/.config/last30days/.env` to add keys")
+        lines.append("- If already signed in but still seeing this, re-run `codex login`")
         lines.append("---")
         lines.append("")
 
@@ -129,7 +130,7 @@ def render_compact(report: schema.Report, limit: int = 15, missing_keys: str = "
         lines.append("*💡 Tip: Add XAI_API_KEY for X/Twitter data and better triangulation.*")
         lines.append("")
     elif report.mode == "x-only" and missing_keys == "reddit":
-        lines.append("*💡 Tip: Add OPENAI_API_KEY for Reddit data and better triangulation.*")
+        lines.append("*💡 Tip: Add OPENAI_API_KEY or run `codex login` for Reddit data and better triangulation. If already signed in, re-run `codex login`.*")
         lines.append("")
 
     # Reddit items
@@ -168,7 +169,7 @@ def render_compact(report: schema.Report, limit: int = 15, missing_keys: str = "
 
             # Top comment insights
             if item.comment_insights:
-                lines.append(f"  Insights:")
+                lines.append("  Insights:")
                 for insight in item.comment_insights[:3]:
                     lines.append(f"    - {insight}")
 
@@ -630,6 +631,8 @@ def render_full_report(report: schema.Report) -> str:
     return "\n".join(lines)
 
 
+
+
 def write_outputs(
     report: schema.Report,
     raw_openai: Optional[dict] = None,