feat: workspaces — session-orchestrator + transport-http + transport-ws + cli (Wave 2+3)

session-orchestrator: workspaceId on StartTurnInput/EnqueueInput; effective cwd
  resolution (getCwd → getEffectiveCwd); auto-create workspace on turn start;
  warm parity (same effective cwd). 93 tests (+8).
transport-http: workspace routes (GET/PUT/DELETE /workspaces, title, default-cwd);
  workspaceId threading on POST /chat + queue; ?workspaceId= filter on
  GET /conversations; DELETE /conversations/:id/cwd (clears explicit cwd);
  GET /conversations/:id/lsp uses effective cwd; slug validation. 166 tests.
transport-ws: workspaceId threading on chat.send + chat.queue. 32 tests.
cli: --workspace/-w flag; ConversationMeta test fakes fixed. 123 tests.

Full typecheck EXIT 0, biome clean. 1283 vitest + 199 transport bun pass
(1 pre-existing tool-shell failure unrelated to workspaces).

1 files changed, 25 insertions, 0 deletions

diff --git a/packages/session-orchestrator/src/queue.test.ts b/packages/session-orchestrator/src/queue.test.ts
index 58de4a9..71b1fb4 100644
--- a/packages/session-orchestrator/src/queue.test.ts
+++ b/packages/session-orchestrator/src/queue.test.ts
@@ -93,6 +93,31 @@ function createInMemoryStore(): ConversationStore & {
 		async setCompactPercent() {},
 		async forkHistory() {},
 		async setCompactedFrom() {},
+		async getWorkspace() {
+			return null;
+		},
+		async ensureWorkspace(id) {
+			return { id, title: id, defaultCwd: null, createdAt: 0, lastActivityAt: 0 };
+		},
+		async setWorkspaceTitle(id, title) {
+			return { id, title, defaultCwd: null, createdAt: 0, lastActivityAt: 0 };
+		},
+		async setWorkspaceDefaultCwd(id, defaultCwd) {
+			return { id, title: id, defaultCwd, createdAt: 0, lastActivityAt: 0 };
+		},
+		async deleteWorkspace() {
+			return { closedCount: 0 };
+		},
+		async listWorkspaces() {
+			return [];
+		},
+		async getWorkspaceId() {
+			return "default";
+		},
+		async setWorkspaceId() {},
+		async getEffectiveCwd(conversationId) {
+			return cwdData.get(conversationId) ?? null;
+		},
 	};
 }