Expose subagent kind and parent_id on the meta record

README.md

@@ -111,9 +111,12 @@ what the adapter drops.
 `listTrajectories()` enumerates the sessions in a source's standard local
 store, newest first, with cursor pagination. It is a discovery layer beside
 normalization — `normalizeTranscript()` itself never touches the filesystem.
-Copilot CLI, Cursor, Gemini CLI, and OpenCode are export-only input contracts
-and intentionally return `listing_unavailable`; callers locate and read the
-exports themselves.
+Copilot CLI, Gemini CLI, and OpenCode are export-only input contracts and
+intentionally return `listing_unavailable`; callers locate and read the
+exports themselves. Cursor lists `~/.cursor/projects/*/agent-transcripts`
+(parents and `subagents/` children); pass each item's `path` as
+`sourceContext.locator` when normalizing so subagent identity can be parsed
+from the path without reading it.
 
 ```ts
 import { listTrajectories } from "@letta-ai/trajectory";

fixtures/claude-code/subagent/expected.json

@@ -5,7 +5,9 @@
       "source": "claude-code",
       "cwd": "/workspace/project",
       "git_branch": "main",
-      "model": "claude-sonnet"
+      "model": "claude-sonnet",
+      "kind": "subagent",
+      "parent_id": "parent-session-fixture"
     },
     {
       "role": "user",

python/src/trajectory/_types.py

@@ -89,6 +89,7 @@ class SourceContext(TypedDict, total=False):
     groupId: str
     baseByteOffset: int
     partial: bool
+    locator: str
 
 
 class _NormalizeInputOptional(TypedDict, total=False):
@@ -139,6 +140,8 @@ class _MetaOptional(TypedDict, total=False):
     cwd: str
     git_branch: str
     model: str
+    kind: Literal["subagent"]
+    parent_id: str
 
 
 class MetaRecord(_MetaOptional):