fix: drop unparseable inline fallback from action.yml

The heredoc Python sat at column 0 inside the run: block, so every
consumer failed with "yaml: line 93: could not find expected ':'".
scripts/generate_notes.py ships with the action and covers it.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

action.yml

@@ -85,82 +85,4 @@ runs:
         INPUT_SYSTEM_PROMPT: ${{ inputs.system_prompt }}
         INPUT_SAVE_TO_FILE: ${{ inputs.save_to_file }}
       run: |
-        SCRIPT_PATH="${{ github.action_path }}/scripts/generate_notes.py"
-        if [[ -f "$SCRIPT_PATH" ]]; then
-          python3 "$SCRIPT_PATH"
-        else
-          python3 - << 'PYEOF'
-import os, sys, subprocess, json, urllib.request, re, uuid
-
-api_key = os.environ.get("INPUT_API_KEY", "")
-base_url = os.environ.get("INPUT_BASE_URL", "https://omni.freakma.com/v1").rstrip("/")
-model = os.environ.get("INPUT_MODEL", "auto/fast")
-version = os.environ.get("INPUT_VERSION", "")
-from_ref = os.environ.get("INPUT_FROM_REF", "")
-to_ref = os.environ.get("INPUT_TO_REF", "HEAD")
-tag_pattern = os.environ.get("INPUT_TAG_PATTERN", "v*")
-max_commits = int(os.environ.get("INPUT_MAX_COMMITS", "50"))
-fallback = os.environ.get("INPUT_FALLBACK_NOTES", "Maintenance updates and performance improvements.")
-timeout = int(os.environ.get("INPUT_TIMEOUT", "25"))
-temp = float(os.environ.get("INPUT_TEMPERATURE", "0.2"))
-sys_prompt = os.environ.get("INPUT_SYSTEM_PROMPT", "")
-save_file = os.environ.get("INPUT_SAVE_TO_FILE", "")
-
-subprocess.run(["git", "fetch", "--tags", "--prune"], capture_output=True)
-
-if not from_ref:
-    if version:
-        target_tag = version if version.startswith("v") else f"v{version}"
-        res = subprocess.run(["git", "describe", "--tags", f"--match={tag_pattern}", "--abbrev=0", f"{target_tag}^"], capture_output=True, text=True)
-        if res.returncode == 0 and res.stdout.strip():
-            from_ref = res.stdout.strip()
-    if not from_ref:
-        code, out = subprocess.run(["git", "describe", "--tags", f"--match={tag_pattern}", "--exact-match", to_ref], capture_output=True, text=True).returncode, ""
-        if code == 0:
-            res = subprocess.run(["git", "describe", "--tags", f"--match={tag_pattern}", "--abbrev=0", f"{to_ref}^"], capture_output=True, text=True)
-            if res.returncode == 0 and res.stdout.strip():
-                from_ref = res.stdout.strip()
-    if not from_ref:
-        res = subprocess.run(["git", "describe", "--tags", f"--match={tag_pattern}", "--abbrev=0", to_ref], capture_output=True, text=True)
-        if res.returncode == 0 and res.stdout.strip():
-            from_ref = res.stdout.strip()
-
-commits = ""
-if from_ref:
-    res = subprocess.run(["git", "log", f"{from_ref}..{to_ref}", "--pretty=format:- %s (%h)"], capture_output=True, text=True)
-    if res.returncode == 0:
-        commits = res.stdout.strip()
-if not commits:
-    res = subprocess.run(["git", "log", f"-n{max_commits}", "--pretty=format:- %s (%h)", to_ref], capture_output=True, text=True)
-    if res.returncode == 0:
-        commits = res.stdout.strip()
-
-filtered = [l.strip() for l in commits.splitlines() if l.strip() and not re.search(r'chore(\(ci\))?:\s*(bump version|release)', l, re.I)]
-commits_clean = "\n".join(filtered) if filtered else commits
-
-notes = fallback
-if commits_clean and api_key:
-    default_sys = "You are an automated release notes generator. Group changes under '### Features', '### Bug Fixes', and '### Improvements'. Filter chores. Output ONLY valid Markdown release notes."
-    p = f"Generate concise release notes{' for v' + version if version else ''} based on commits:\n\n{commits_clean}"
-    payload = {"model": model, "messages": [{"role": "system", "content": sys_prompt or default_sys}, {"role": "user", "content": p}], "temperature": temp}
-    try:
-        req = urllib.request.Request(f"{base_url}/chat/completions", data=json.dumps(payload).encode("utf-8"), headers={"Authorization": f"Bearer {api_key}", "Content-Type": "application/json"})
-        with urllib.request.urlopen(req, timeout=timeout) as r:
-            c = json.loads(r.read().decode("utf-8"))["choices"][0]["message"]["content"]
-            c = re.sub(r'<think>.*?</think>', '', c, flags=re.DOTALL).strip()
-            notes = c if c else fallback
-    except Exception as e:
-        sys.stderr.write(f"LLM call failed: {e}\n")
-
-if save_file:
-    with open(save_file, "w", encoding="utf-8") as f:
-        f.write(notes + "\n")
-
-gh = os.environ.get("GITHUB_OUTPUT")
-if gh and os.path.exists(os.path.dirname(gh) or "."):
-    d = f"EOF_{uuid.uuid4().hex}"
-    with open(gh, "a", encoding="utf-8") as f:
-        f.write(f"notes<<{d}\n{notes}\n{d}\nnotes_file={save_file}\n")
-print(notes)
-PYEOF
-        fi
+        python3 "${{ github.action_path }}/scripts/generate_notes.py"