chore(prompts): host fallback build and minimal manifest parser (no PyYAML)

scripts/prompt_build.py

@@ -1,9 +1,31 @@
 #!/usr/bin/env python3
-import os, sys, yaml
+import os, sys
 
 def load_manifest(path):
+    # Minimal YAML parser for our simple manifests:
+    # keys: name (ignored), include: [..], modules: [..]
+    data = {"include": [], "modules": []}
+    key = None
     with open(path, 'r', encoding='utf-8') as f:
-        return yaml.safe_load(f)
+        for raw in f:
+            line = raw.rstrip('\n')
+            s = line.strip()
+            if not s or s.startswith('#'):
+                continue
+            if s.startswith('include:'):
+                key = 'include'
+                continue
+            if s.startswith('modules:'):
+                key = 'modules'
+                continue
+            if s.startswith('name:'):
+                key = None
+                continue
+            # list item under current key
+            if key in ('include', 'modules') and s.startswith('- '):
+                item = s[2:].strip()
+                data[key].append(item)
+    return data
 
 def resolve(path, seen):
     m = load_manifest(path)
@@ -28,6 +50,7 @@ def main():
     if not mods:
         print(f"No modules resolved from {manifest}", file=sys.stderr)
         sys.exit(1)
+    if out_path != '-':
         os.makedirs(os.path.dirname(out_path), exist_ok=True)
     def read(p):
         with open(p, 'r', encoding='utf-8') as f:

scripts/prompts

@@ -31,7 +31,11 @@ build_manifest() {
   # Write on host to avoid ownership issues; container prints to stdout.
   TMP_OUT=$(mktemp)
   trap '[[ -n "${TMP_OUT:-}" ]] && rm -f "$TMP_OUT"' EXIT
-  ci_run "python3 scripts/prompt_build.py '$manifest' -" >"$TMP_OUT"
+  ci_run "python3 scripts/prompt_build.py '$manifest' -" >"$TMP_OUT" || true
+  # Fallback: if container produced no output, run on host
+  if [[ ! -s "$TMP_OUT" ]]; then
+    python3 scripts/prompt_build.py "$manifest" - >"$TMP_OUT"
+  fi
   mkdir -p "$(dirname "$out")"
   mv "$TMP_OUT" "$out"
 }