fix(agent): route "list my threads" to direct thread_list, not the memory sub-agent (#4744) (#4752)

src/openhuman/agent_registry/agents/orchestrator/agent.toml

@@ -216,6 +216,14 @@ named = [
     "grep",
     "glob",
     "list",
+    # Conversation-thread listing is a read-only, zero-arg, local lookup —
+    # exactly the kind of "small touch" this direct surface exists for. Without
+    # it, "list my recent threads / conversations" has no correct route (the
+    # thread-owning `context_scout` is not in this agent's subagent allowlist),
+    # so the model misroutes to `agent_memory`, which walks the memory tree
+    # (`memory_tree` / `memory_doctor`) instead of listing threads (#4744).
+    # Reading a thread's messages still delegates — this is list-only.
+    "thread_list",
     # Quick web/API lookups. A single fact ("what's the capital of X", "latest
     # version of Y") is one `web_search_tool` / `web_fetch` / `http_request`
     # call — spawning the `research` worker for that is overkill. Multi-source

src/openhuman/agent_registry/agents/orchestrator/prompt.md

@@ -26,6 +26,7 @@ Follow this sequence for every user message:
    - Yes: use direct tools (`retrieve_memory`, `read_workspace_state`, `composio_list_connections`, task tools, etc.).
    - **Quick lookups are direct work.** Use `web_search_tool` for quick discovery, `web_fetch` for one URL/body read, and `http_request` for basic API/HTTP semantics (methods, headers, JSON endpoints, status/HEAD checks). Reserve `research` for multi-source crawls, comparisons, deep digests, or uncertain evidence gathering.
    - **Read-only file lookups are direct work.** Reading a file the user names, grepping for a string, or listing a directory (`file_read` / `grep` / `glob` / `list`) needs no sub-agent. Managed storage transfer is also direct when the user needs uploaded/downloaded/listed/linked artifacts. But you cannot use generic write/edit tools: the moment the task requires *changing* a file — even a one-line edit — delegate it to `run_code` (see below). Never promise an edit you cannot make yourself.
+   - **Listing conversation threads is direct work.** "List / show my recent threads (or conversations)" is a single `thread_list` call you make yourself — do **not** delegate it to `retrieve_memory` / a memory sub-agent. Memory retrieval walks the *memory tree* (ingested facts), which is the wrong tool for enumerating chat threads. Reserve `retrieve_memory` for questions about remembered content, not the thread index.
    - No: continue.
 4. **Does this need other specialised execution?**
    - If the request is about OpenHuman product behavior, settings, docs, setup, or feature availability, use `ask_docs`.

tests/orchestrator_thread_list_wiring.rs

@@ -0,0 +1,86 @@
+//! Pins the orchestrator's conversation-thread routing (#4744).
+//!
+//! An agent-efficiency eval found that "list my recent conversation threads"
+//! made the chat-tier orchestrator spawn a *Memory Agent* that walked the
+//! memory tree (`memory_tree` / `memory_doctor`) instead of listing threads.
+//! Root cause: the orchestrator had no correct route to the thread index — it
+//! lacked the read-only `thread_list` tool directly, and the thread-owning
+//! `context_scout` is not in its subagent allowlist — so the model fell back
+//! to the closest specialist (`agent_memory`), the wrong tool.
+//!
+//! The fix makes `thread_list` a direct read-only tool on the orchestrator
+//! (a zero-arg, local, single-call lookup — the same class as `file_read` /
+//! `list`) and teaches the prompt to use it directly rather than delegating
+//! to memory retrieval. These invariants pin that wiring.
+//!
+//! Exact-line matching (not substring) so a commented-out entry or a
+//! prefixed name (`thread_list_v2`) can't satisfy the assertion accidentally.
+
+const ORCHESTRATOR_TOML: &str =
+    include_str!("../src/openhuman/agent_registry/agents/orchestrator/agent.toml");
+
+const ORCHESTRATOR_PROMPT: &str =
+    include_str!("../src/openhuman/agent_registry/agents/orchestrator/prompt.md");
+
+/// True if `toml` lists `name` as a bare quoted array entry (`"name"` or
+/// `"name",`), matching how the `named = [ … ]` / subagent allowlists are
+/// written. Ignores leading indentation and trailing whitespace.
+fn lists_named_tool(toml: &str, name: &str) -> bool {
+    let bare = format!("\"{name}\"");
+    let trailing = format!("\"{name}\",");
+    toml.lines()
+        .map(str::trim)
+        .any(|line| line == bare || line == trailing)
+}
+
+/// Returns just the `[subagents]` table (from its header up to the next
+/// top-level `[table]` header) so allowlist membership checks are scoped to the
+/// subagent allowlist rather than the whole file. An unrelated `context_scout`
+/// mention elsewhere (a different array, a comment) must neither satisfy nor
+/// break the routing invariant this test pins.
+fn subagents_section(toml: &str) -> &str {
+    let start = toml
+        .find("[subagents]")
+        .expect("orchestrator agent.toml must declare a [subagents] table");
+    let rest = &toml[start..];
+    // Table headers sit at the start of a line; the section runs until the next.
+    let end = rest[1..].find("\n[").map(|i| i + 1).unwrap_or(rest.len());
+    &rest[..end]
+}
+
+#[test]
+fn orchestrator_lists_thread_list_as_direct_tool() {
+    assert!(
+        lists_named_tool(ORCHESTRATOR_TOML, "thread_list"),
+        "orchestrator must have `thread_list` as a direct read-only tool so \
+         'list my recent threads' is one direct call, not a memory sub-agent \
+         spawn that walks the memory tree (#4744)"
+    );
+}
+
+#[test]
+fn orchestrator_does_not_route_thread_listing_through_memory_subagent() {
+    // The orchestrator reaches memory retrieval via the `agent_memory`
+    // subagent (synthesised as `delegate_retrieve_memory`). It must NOT own
+    // `context_scout` (the other `thread_list` holder) as a subagent — the
+    // direct tool is the intended route. If a future change adds `context_scout`
+    // here, revisit whether thread listing should still be direct. Scoped to the
+    // [subagents] table so an unrelated mention elsewhere can't false-fail the
+    // invariant.
+    assert!(
+        !lists_named_tool(subagents_section(ORCHESTRATOR_TOML), "context_scout"),
+        "orchestrator is not expected to delegate to context_scout; thread \
+         listing is served by the direct `thread_list` tool (#4744)"
+    );
+}
+
+#[test]
+fn prompt_teaches_direct_thread_listing() {
+    // The capability alone isn't enough — the prompt must steer the model to
+    // call `thread_list` directly instead of delegating to memory retrieval.
+    assert!(
+        ORCHESTRATOR_PROMPT.contains("thread_list"),
+        "orchestrator prompt must mention `thread_list` so the model uses it \
+         directly for thread-listing requests (#4744)"
+    );
+}