v2.1.0-provider-picker: BooCoder systemd migration + provider picker

- BooCoder moves from Docker to host systemd service (boocoder.service)
- Agent dispatch (ACP + PTY) switches from SSH to direct spawn/exec
- SSH helpers marked @deprecated (kept for one release cycle)
- Provider registry (5 providers: boocode, opencode, goose, claude, qwen)
- Agent probe with direct which/exec + model discovery (qwen settings, static claude models)
- GET /api/providers route with installed status, models, transport fallback
- ProviderPicker frontend component in CoderPane header
- External provider messages route through tasks row instead of inference enqueue
- Smart scroll: MessageList only auto-scrolls when near bottom (150px threshold)
- DB: available_agents gets models, label, transport columns
- Bug fix: loadContext SELECT includes allowed_read_paths
- Bug fix: cap hit sentinel inserted before buildMessagesPayload
- docker-compose.yml: boocoder service commented out, BOOCODER_URL env var added
- CLAUDE.md: updated docs for systemd, provider registry, JSONB gotcha, loadContext

apps/coder/src/services/acp-dispatch.ts

@@ -1,12 +1,12 @@
 /**
- * ACP dispatch — runs ACP-capable agents (opencode, goose) on the host via SSH.
+ * ACP dispatch — runs ACP-capable agents (opencode, goose) directly on the host.
  *
- * Uses the @agentclientprotocol/sdk to establish a structured JSON-RPC session
- * with the agent subprocess. The SSH tunnel provides stdio transport.
+ * v2.1.1: BooCoder runs on the host now — agents are spawned directly,
+ * no SSH needed. Uses @agentclientprotocol/sdk for structured JSON-RPC.
  *
  * Flow:
- * 1. SSH to host, start `opencode acp` (or `goose acp`) in the worktree
- * 2. Wrap SSH child's stdin/stdout into NDJSON streams
+ * 1. Spawn `opencode acp` (or `goose acp`) in the worktree
+ * 2. Wrap child's stdin/stdout into NDJSON streams
  * 3. Create a ClientSideConnection from the SDK
  * 4. Initialize → newSession → prompt(task)
  * 5. Collect session updates (tool calls, text output)
@@ -28,7 +28,7 @@ import {
   type CreateTerminalRequest,
   type CreateTerminalResponse,
 } from '@agentclientprotocol/sdk';
-import { sshSpawn } from './ssh.js';
+import { spawn } from 'node:child_process';
 
 export interface AcpDispatchResult {
   exitCode: number;
@@ -42,17 +42,17 @@ export interface AcpDispatchOpts {
   task: string;
   worktreePath: string;
   model?: string;
+  installPath?: string;
   signal?: AbortSignal;
   log: FastifyBaseLogger;
 }
 
-/** Map agent name to the ACP command it exposes. */
-function acpCommand(agent: string): string | null {
+function acpArgs(agent: string): string[] | null {
   switch (agent) {
     case 'opencode':
-      return 'opencode acp';
+      return ['acp'];
     case 'goose':
-      return 'goose acp';
+      return ['acp'];
     default:
       return null;
   }
@@ -114,10 +114,10 @@ function nodeWritableToWeb(nodeStream: NodeJS.WritableStream): WritableStream<Ui
  * all session updates. Returns the collected output and tool calls.
  */
 export async function dispatchViaAcp(opts: AcpDispatchOpts): Promise<AcpDispatchResult> {
-  const { agent, task, worktreePath, signal, log } = opts;
+  const { agent, task, worktreePath, installPath, signal, log } = opts;
 
-  const cmd = acpCommand(agent);
-  if (!cmd) {
+  const args = acpArgs(agent);
+  if (!args) {
     return {
       exitCode: 1,
       output: `Agent '${agent}' does not support ACP.`,
@@ -126,12 +126,13 @@ export async function dispatchViaAcp(opts: AcpDispatchOpts): Promise<AcpDispatch
     };
   }
 
-  // Spawn SSH with the ACP command running in the worktree
-  const escapedPath = worktreePath.replace(/'/g, "'\\''");
-  const fullCommand = `cd '${escapedPath}' && ${cmd}`;
-
-  log.info({ agent, worktreePath }, 'acp-dispatch: spawning');
-  const child = sshSpawn(fullCommand);
+  const binary = installPath ?? agent;
+  log.info({ agent, binary, worktreePath }, 'acp-dispatch: spawning');
+  const child = spawn(binary, args, {
+    cwd: worktreePath,
+    stdio: ['pipe', 'pipe', 'pipe'],
+    env: { ...process.env },
+  });
 
   // Wire up abort
   let killed = false;