feat: Claude Code Monitor — lanes, pipelines and a merged workspace

Internal SmartGift build of a Claude Code monitoring dashboard.

Lanes: a durable unit of parallel agent work, one per working directory,
tracked across session restarts. Managed lanes are git worktrees the
dashboard provisions and can reset or remove behind a three-check destroy
guard and a counted preflight; adopted lanes are directories you already
own and are never destroyable.

Pipelines: a lane moves through pipeline stages. A stage the agent declares
with evidence renders green; a stage inferred from the tool-event stream
renders dashed amber and never counts as done. Detection is forward-only
within a 30-minute window, and never writes the declared stage.

Workspace: one page at /run with a lane grid, the selected lane's pipeline,
and a full Claude console behind a disclosure.

server/openapi-extra.js

@@ -0,0 +1,55 @@
+/**
+ * @file Supplementary OpenAPI fragments merged into the base spec by
+ * `createOpenApiSpec()` (server/openapi.js). Each domain fragment under
+ * `server/openapi-extra/` exports `{ tags, schemas, paths }`; this module
+ * deep-combines them into one `{ tags, schemas, paths }` object. Extra paths
+ * and schemas OVERRIDE base entries with the same key, so a comprehensive
+ * entry here can supersede a terser one in the base literal; tags are appended
+ * only when their `name` is not already present.
+ * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
+ */
+
+// New endpoint groups (previously-undocumented gaps in the base spec).
+const ccConfig = require("./openapi-extra/cc-config");
+const run = require("./openapi-extra/run");
+const lanes = require("./openapi-extra/lanes");
+const push = require("./openapi-extra/push");
+const misc = require("./openapi-extra/misc");
+// Enriched overrides of already-documented endpoints — same operationId, tags,
+// and request/response `$ref` schemas as the base, with added examples and
+// richer descriptions. Listed last so they win the merge.
+const overrideSessionsAgents = require("./openapi-extra/override-sessions-agents");
+const overrideCore = require("./openapi-extra/override-core");
+const overridePricingAlerts = require("./openapi-extra/override-pricing-alerts");
+const overrideOps = require("./openapi-extra/override-ops");
+
+/** Combine N fragments into a single { tags, schemas, paths }. Later fragments
+ *  override earlier ones on path/schema key collisions; tags dedupe by name. */
+function combine(...fragments) {
+  const out = { tags: [], schemas: {}, paths: {} };
+  const tagNames = new Set();
+  for (const frag of fragments) {
+    if (!frag) continue;
+    for (const tag of frag.tags || []) {
+      if (tag && !tagNames.has(tag.name)) {
+        tagNames.add(tag.name);
+        out.tags.push(tag);
+      }
+    }
+    Object.assign(out.schemas, frag.schemas || {});
+    Object.assign(out.paths, frag.paths || {});
+  }
+  return out;
+}
+
+module.exports = combine(
+  ccConfig,
+  run,
+  lanes,
+  push,
+  misc,
+  overrideSessionsAgents,
+  overrideCore,
+  overridePricingAlerts,
+  overrideOps
+);