homelab: stop sops-policy scan resetting state on the next rule

Critical bug — the loop reset age_block_last_idx unconditionally on
every '- path_regex:' line. So after finding the target rule's age
block, encountering the NEXT rule wiped the result and the function
returned False. _grant_shared_secrets / _revoke_shared_secrets both
silently no-op'd because of this.

Fix: break out of the scan once we've collected the target rule's
data. Refactored the remove helper to share a find_target_age_lines
inner so the dangling-trailing-comma fixup uses the same logic.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

bin/homelab

@@ -141,6 +141,10 @@ def _add_recipient_to_sops_policy(sops_path: Path, path_regex_pattern: str, pubk
     for i, line in enumerate(lines):
         stripped = line.strip()
         if stripped.startswith("- path_regex:"):
+            # If we've already collected what we need from the target rule,
+            # stop — don't let the next rule wipe age_block_last_idx.
+            if in_target_rule and age_block_last_idx is not None:
+                break
             in_target_rule = path_regex_pattern in line
             age_block_start = None
             age_block_last_idx = None
@@ -152,13 +156,12 @@ def _add_recipient_to_sops_policy(sops_path: Path, path_regex_pattern: str, pubk
             continue
         if age_block_start is None:
             continue
-        # Inside the age block; track the last age1... line.
         if "age1" in stripped:
             if pubkey in line:
                 return True  # already a recipient
             age_block_last_idx = i
         elif stripped == "" or stripped.startswith("#"):
-            continue  # blank / comment inside the block
+            continue
         else:
             break  # next key, age block ended
     if age_block_last_idx is None:
@@ -204,59 +207,47 @@ def _remove_recipient_from_sops_policy(sops_path: Path, path_regex_pattern: str,
     if not sops_path.exists():
         return False
     lines = sops_path.read_text().splitlines(keepends=True)
-    in_target_rule = False
-    age_block_start = None
-    target_idx = None
-    for i, line in enumerate(lines):
-        stripped = line.strip()
-        if stripped.startswith("- path_regex:"):
-            in_target_rule = path_regex_pattern in line
-            age_block_start = None
-            target_idx = None
-            continue
-        if not in_target_rule:
-            continue
-        if "age: >-" in line:
-            age_block_start = i
-            continue
-        if age_block_start is None:
-            continue
-        if "age1" in stripped:
-            if pubkey in line:
-                target_idx = i
+
+    def find_target_age_lines() -> tuple[list[int], bool]:
+        """Scan and return (indices_of_age1_lines_in_target_rule, found_rule)."""
+        in_target = False
+        age_block_start = None
+        age_idxs: list[int] = []
+        for i, line in enumerate(lines):
+            stripped = line.strip()
+            if stripped.startswith("- path_regex:"):
+                if in_target and age_idxs:
+                    return age_idxs, True
+                in_target = path_regex_pattern in line
+                age_block_start = None
+                age_idxs = []
+                continue
+            if not in_target:
+                continue
+            if "age: >-" in line:
+                age_block_start = i
+                continue
+            if age_block_start is None:
+                continue
+            if "age1" in stripped:
+                age_idxs.append(i)
+            elif stripped == "" or stripped.startswith("#"):
+                continue
+            else:
                 break
-        elif stripped == "" or stripped.startswith("#"):
-            continue
-        else:
-            break  # next key, age block ended
+        return age_idxs, in_target
+
+    age_idxs, found = find_target_age_lines()
+    if not found:
+        return False
+    target_idx = next((i for i in age_idxs if pubkey in lines[i]), None)
     if target_idx is None:
-        return True  # nothing to remove — already absent
+        return True  # already absent
     del lines[target_idx]
-    # Fix a now-dangling trailing comma on the new last age line if any.
-    # Find the new last age line in this rule's age block.
-    in_target_rule = False
-    age_block_start = None
-    last_age_idx = None
-    for i, line in enumerate(lines):
-        stripped = line.strip()
-        if stripped.startswith("- path_regex:"):
-            in_target_rule = path_regex_pattern in line
-            age_block_start = None
-            continue
-        if not in_target_rule:
-            continue
-        if "age: >-" in line:
-            age_block_start = i
-            continue
-        if age_block_start is None:
-            continue
-        if "age1" in stripped:
-            last_age_idx = i
-        elif stripped == "" or stripped.startswith("#"):
-            continue
-        else:
-            break
-    if last_age_idx is not None:
+    # After deletion, fix trailing comma on the new last age line.
+    new_age_idxs, _ = find_target_age_lines()
+    if new_age_idxs:
+        last_age_idx = new_age_idxs[-1]
         last_line = lines[last_age_idx]
         if last_line.rstrip().endswith(","):
             lines[last_age_idx] = last_line.rstrip().rstrip(",") + "\n"