fix(agents): generic <word>: prefix peeler for delivery targets

MS Teams inbound context sets OriginatingTo to `conversation:<id>` while
route bindings key on the bare conversationId. The previous hand-rolled
prefix list (`room:`, `channel:`, `chat:`, `group:`, `user:`, `dm:`)
missed `conversation:` (and any future channel-specific namespacing), so
Teams cross-agent subagent spawns fell back to channel-only/caller
account and posted from the wrong identity.

extractRequesterPeer now uses a generic `^[a-z][a-z0-9_-]*:` regex to
peel any lowercase-alpha token-colon prefix, looping until the raw peer
id surfaces. Real-world peer ids never start with a lowercase-alpha
token followed by `:` (Matrix uses `!`/`@`, IRC `#`, Slack/Discord/LINE
alphanumerics, numeric Telegram/WhatsApp, or email-style `user@server`),
so this is safe. Known prefixes are mapped to ChatType for peerKind
inference (`conversation:`/`room:`/`channel:`/`chat:`/`thread:`/`topic:`
→ channel, `group:`/`team:` → group, `user:`/`dm:`/`pm:` → direct).

Regression test: sessions_spawn strips `conversation:` prefix for
Teams-style targets — a binding keyed on the raw conversation id
resolves correctly when the caller's `agentTo` is `conversation:<id>`.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/agents/openclaw-tools.subagents.sessions-spawn.lifecycle.test.ts

@@ -754,6 +754,51 @@ describe("openclaw-tools: subagents (sessions_spawn lifecycle)", () => {
     expect(spawnAccountId).toBe("bot-alpha-line");
   });
 
+  it("sessions_spawn strips conversation: prefix for Teams-style targets", async () => {
+    let spawnAccountId: string | undefined;
+    const rawConversationId = "19:example-conversation@thread.v2";
+    setSessionsSpawnConfigOverride({
+      session: { mainKey: "main", scope: "per-sender" },
+      messages: { queue: { debounceMs: 0 } },
+      agents: { defaults: { subagents: { allowAgents: ["bot-alpha"] } } },
+      bindings: [
+        {
+          type: "route",
+          agentId: "bot-alpha",
+          match: {
+            channel: "msteams",
+            peer: { kind: "channel", id: rawConversationId },
+            accountId: "bot-alpha-teams",
+          },
+        },
+      ],
+    });
+    setupSessionsSpawnGatewayMock({
+      onAgentSubagentSpawn: (params) => {
+        const rec = params as { accountId?: string } | undefined;
+        spawnAccountId = rec?.accountId;
+      },
+    });
+
+    // Teams inbound context sets OriginatingTo to `conversation:<id>`. With the
+    // generic prefix peeler in extractRequesterPeer, the bound-account lookup
+    // should still find the binding keyed on the raw conversation id.
+    const tool = await getSessionsSpawnTool({
+      agentSessionKey: "main",
+      agentChannel: "msteams",
+      agentAccountId: "bot-beta",
+      agentTo: `conversation:${rawConversationId}`,
+    });
+
+    const result = await tool.execute("call-teams-conversation", {
+      task: "do thing",
+      agentId: "bot-alpha",
+      cleanup: "keep",
+    });
+    expect(result.details).toMatchObject({ status: "accepted", runId: expect.any(String) });
+    expect(spawnAccountId).toBe("bot-alpha-teams");
+  });
+
   it("sessions_spawn preserves the caller's account for same-agent subagent spawns", async () => {
     let spawnAccountId: string | undefined;
     const room = "!someRoom:example.org";

src/agents/subagent-spawn.ts

@@ -308,6 +308,12 @@ const KIND_PREFIX_TO_CHAT_TYPE: Readonly<Record<string, ChatType>> = {
   "pm:": "direct",
 };
 
+// Matches any `<alpha-token>:` prefix. Real-world peer ids (Matrix `!`/`@`,
+// IRC `#`, Slack/Discord/LINE alphanumerics, numeric Telegram/WhatsApp, or
+// email-style `user@server`) never start with a lowercase-alpha token followed
+// by `:`, so this cleanly peels namespace and kind prefixes without risking
+// the raw id itself. When a peeled token maps to a known ChatType, we also
+// record it as an inferred peerKind.
 const GENERIC_PREFIX_PATTERN = /^[a-z][a-z0-9_-]*:/i;
 
 function extractRequesterPeer(