feat: add terminal identity and agent cli facade

1 files changed, 45 insertions, 1 deletions

diff --git a/SOCKET_API.md b/SOCKET_API.md
index 51046860..fe6aed2d 100644
--- a/SOCKET_API.md
+++ b/SOCKET_API.md
@@ -9,7 +9,7 @@ if you are teaching an agent that is already running inside herdr, start with [`
 there are three practical ways to integrate with herdr:
 
 - **agent skill** — [`SKILL.md`](./SKILL.md). best when an agent inside herdr just needs to learn the workflow quickly.
-- **cli wrappers** — `herdr server stop`, `herdr workspace ...`, `herdr tab ...`, `herdr pane ...`, `herdr wait ...`. best for shell scripts and simple orchestration.
+- **cli wrappers** — `herdr server stop`, `herdr workspace ...`, `herdr tab ...`, `herdr agent ...`, `herdr pane ...`, `herdr wait ...`. best for shell scripts and simple orchestration.
 - **raw socket api** — best when you want direct request/response control or long-lived event subscriptions.
 
 these layers are intentionally stacked on top of the same control surface.
@@ -141,6 +141,7 @@ for backward compatibility, requests also accept the older positional forms like
 ```json
 {
   "pane_id": "w64e95948145ed1-1",
+  "terminal_id": "term_64e95948145ed1",
   "workspace_id": "w64e95948145ed1",
   "tab_id": "w64e95948145ed1:1",
   "focused": true,
@@ -152,8 +153,29 @@ for backward compatibility, requests also accept the older positional forms like
 }
 ```
 
+`terminal_id` is an opaque terminal identity. during the pane-backed transition each pane has one terminal id, but clients should not derive it from the pane id.
+
 `label` is an optional manual pane name set through `pane.rename`.
 
+`agent_info` responses contain a terminal-facing view of the same live pane-backed terminal:
+
+```json
+{
+  "terminal_id": "term_64e95948145ed1",
+  "name": "reviewer",
+  "agent": "pi",
+  "agent_status": "working",
+  "workspace_id": "w64e95948145ed1",
+  "tab_id": "w64e95948145ed1:1",
+  "pane_id": "w64e95948145ed1-1",
+  "focused": true,
+  "cwd": "/home/can/Projects/herdr",
+  "revision": 0
+}
+```
+
+`name` is the manual pane label treated as the terminal/agent name by `agent.*` commands. `agent.rename` rejects duplicate active names; `pane.rename` remains backward-compatible and can still create duplicates.
+
 `agent` is an optional display label string.
 
 - when herdr detects a built-in agent, this is that built-in name like `pi` or `claude`
@@ -203,6 +225,12 @@ for backward compatibility, requests also accept the older positional forms like
 | `tab.focus` | focus a tab | `tab_info` |
 | `tab.rename` | rename a tab | `tab_info` |
 | `tab.close` | close a tab | `ok` |
+| `agent.list` | list named or detected terminal-backed agents | `agent_list` |
+| `agent.get` | inspect one terminal-backed agent by terminal id, unique name, or pane id | `agent_info` |
+| `agent.read` | read output from one terminal-backed agent | `pane_read` |
+| `agent.send` | send literal text to one terminal-backed agent | `ok` |
+| `agent.rename` | set or clear the unique agent/terminal name | `agent_info` |
+| `agent.focus` | show the terminal-backed agent in the TUI | `agent_info` |
 | `pane.list` | list panes, optionally filtered by workspace | `pane_list` |
 | `pane.get` | inspect one pane | `pane_info` |
 | `pane.rename` | set or clear a manual pane label | `pane_info` |
@@ -960,6 +988,19 @@ herdr tab rename <tab_id> <label>
 herdr tab close <tab_id>
 ```
 
+agent commands:
+
+```text
+herdr agent list
+herdr agent get <target>
+herdr agent read <target> [--source visible|recent|recent-unwrapped] [--lines N] [--format text|ansi] [--ansi]
+herdr agent send <target> <text>
+herdr agent rename <target> <name>|--clear
+herdr agent focus <target>
+```
+
+agent targets accept terminal ids, unique agent names, and legacy pane ids. duplicate names fail clearly for `agent.*`; `pane.rename` can still create duplicate pane labels for backward compatibility.
+
 pane commands:
 
 ```text
@@ -994,6 +1035,9 @@ herdr wait agent-status <pane_id> --status <idle|working|blocked|done|unknown> [
 - `tab create` without `--label` keeps the default numbered tab naming
 - `tab create --label` applies the custom tab name immediately
 - `tab create` returns `result.tab` and `result.root_pane`
+- `agent list` shows named panes and detected/reported agents as terminal-backed agents
+- `agent focus` switches the TUI workspace/tab/pane focus; it is not direct terminal attach
+- `agent rename` enforces unique active names; use `pane rename` only when duplicate labels are intentional
 - `pane split` keeps focus where it is by default; pass `--focus` to switch to the new pane
 - `pane read` prints **text**, not json
 - `pane read --format ansi` and `pane read --ansi` print a rendered ANSI snapshot with colors/styles preserved