v2.2-paseo-providers: Paseo provider stack + v2.2.1 pane-scoped chat fixes

Ship Paseo-equivalent provider snapshot, AgentComposerBar, ACP dispatch
rewrite with streaming/persist, permission prompts, and agent commands.
Follow-up: pane-scoped chat resolution, CoderMessageList tool timeline,
WS user-delta replace, and inference orphan tool_call stripping.
Archive openspec v2-2; update CHANGELOG and CURRENT.

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/coder/src/routes/providers.ts

@@ -1,80 +1,17 @@
 import type { FastifyInstance } from 'fastify';
 import type { Sql } from '../db.js';
 import type { Config } from '../config.js';
-import { PROVIDERS } from '../services/provider-registry.js';
-
-interface ProviderModel {
-  id: string;
-  label: string;
-}
-
-interface ProviderResponse {
-  name: string;
-  label: string;
-  transport: string;
-  installed: boolean;
-  models: ProviderModel[];
-}
-
-interface LlamaSwapModel {
-  id: string;
-  [key: string]: unknown;
-}
-
-async function fetchLlamaSwapModels(config: Config): Promise<ProviderModel[]> {
-  try {
-    const res = await fetch(`${config.LLAMA_SWAP_URL}/v1/models`);
-    if (!res.ok) return [];
-    const parsed = (await res.json()) as { data?: LlamaSwapModel[] };
-    return (parsed.data ?? []).map((m) => ({ id: m.id, label: m.id }));
-  } catch {
-    return [];
-  }
-}
+import { getProviderSnapshot, clearProviderSnapshotCache } from '../services/provider-snapshot.js';
 
 export function registerProviderRoutes(app: FastifyInstance, sql: Sql, config: Config): void {
-  app.get('/api/providers', async (_req, _reply) => {
-    const llamaModels = await fetchLlamaSwapModels(config);
+  app.get<{ Querystring: { cwd?: string } }>('/api/providers/snapshot', async (req, _reply) => {
+    const cwd = req.query.cwd;
+    return getProviderSnapshot(sql, config, cwd);
+  });
 
-    const agents = await sql<{ name: string; models: ProviderModel[]; label: string | null; transport: string | null; supports_acp: boolean }[]>`
-      SELECT name, models, label, transport, supports_acp FROM available_agents
-    `;
-    const agentMap = new Map(agents.map((a) => [a.name, a]));
-
-    const result: ProviderResponse[] = [];
-
-    for (const provider of PROVIDERS) {
-      const isNative = provider.name === 'boocode';
-      const agentRow = agentMap.get(provider.name);
-      const installed = isNative || !!agentRow;
-
-      if (!installed) continue;
-
-      let models: ProviderModel[];
-      if (provider.modelSource === 'llama-swap') {
-        models = llamaModels;
-      } else if (agentRow?.models && agentRow.models.length > 0) {
-        models = agentRow.models;
-      } else if (provider.staticModels) {
-        models = provider.staticModels;
-      } else {
-        models = [];
-      }
-
-      let transport: string = provider.transport;
-      if (agentRow) {
-        transport = provider.transport === 'acp' && !agentRow.supports_acp ? 'pty' : provider.transport;
-      }
-
-      result.push({
-        name: provider.name,
-        label: agentRow?.label ?? provider.label,
-        transport,
-        installed,
-        models,
-      });
-    }
-
-    return result;
+  app.post('/api/providers/refresh', async (_req, _reply) => {
+    clearProviderSnapshotCache();
+    const entries = await getProviderSnapshot(sql, config, undefined, true);
+    return { refreshed: entries.length };
   });
 }