feat(lanes): add isIntegrationEnabled toggle check (F3a)

server/lib/lane-profile.js

@@ -195,6 +195,34 @@ function profileSearchPaths(lane) {
     .map((root) => path.join(root, PROFILE_SUBDIR));
 }
 
+/**
+ * Whether a named integration is turned on for this lane — reads
+ * .ccam/profile/integrations.env (same two-location search as profile.env:
+ * the lane's own working copy first, the source repo second) and checks
+ * <NAME>_ENABLED=1. A missing file or missing key is off, never an error —
+ * same off-by-default shape every other optional declaration follows.
+ *
+ * @param {object} lane - Lane row (`cwd`, `source_repo`).
+ * @param {string} name - Lowercase integration name, e.g. "tracker", "dev_qc", "ci_wait".
+ * @returns {boolean}
+ */
+function isIntegrationEnabled(lane, name) {
+  const candidates = [lane.cwd, lane.source_repo].filter(Boolean);
+  const key = `${name.toUpperCase()}_ENABLED`;
+  for (const root of candidates) {
+    const filePath = path.join(root, PROFILE_SUBDIR, "integrations.env");
+    if (!fs.existsSync(filePath)) continue;
+    let declared;
+    try {
+      declared = parseEnvFile(fs.readFileSync(filePath, "utf8"));
+    } catch {
+      continue;
+    }
+    return declared[key] === "1";
+  }
+  return false;
+}
+
 /**
  * A `harness_spawn` shell function, injected into every hook.
  *
@@ -428,6 +456,7 @@ module.exports = {
   parseQcBootEnv,
   resolveProfile,
   profileSearchPaths,
+  isIntegrationEnabled,
   hookEnv,
   runHook,
 };