feat: project settings page with paseo.json editor

Adds a Projects settings flow for inspecting and editing per-project
paseo.json (worktree setup/teardown, scripts, terminals) directly from the
app. Reads/writes go through new daemon RPCs with revision-based optimistic
concurrency, and the screen always keeps its header and host picker visible
so a hung host doesn't trap the user.

packages/app/src/stores/session-store.test.ts

@@ -115,6 +115,50 @@ describe("normalizeWorkspaceDescriptor", () => {
 
     expect(workspace.scripts).toEqual([]);
   });
+
+  it("preserves project placement from workspace descriptor payloads", () => {
+    const workspace = normalizeWorkspaceDescriptor({
+      id: "1",
+      projectId: "remote:github.com/acme/app",
+      projectDisplayName: "acme/app",
+      projectRootPath: "/repo/app",
+      workspaceDirectory: "/repo/app",
+      projectKind: "git",
+      workspaceKind: "local_checkout",
+      name: "main",
+      status: "done",
+      activityAt: null,
+      diffStat: null,
+      scripts: [],
+      project: {
+        projectKey: "remote:github.com/acme/app",
+        projectName: "acme/app",
+        checkout: {
+          cwd: "/repo/app",
+          isGit: true,
+          currentBranch: "main",
+          remoteUrl: "https://github.com/acme/app.git",
+          worktreeRoot: "/repo/app",
+          isPaseoOwnedWorktree: false,
+          mainRepoRoot: null,
+        },
+      },
+    });
+
+    expect(workspace.project).toEqual({
+      projectKey: "remote:github.com/acme/app",
+      projectName: "acme/app",
+      checkout: {
+        cwd: "/repo/app",
+        isGit: true,
+        currentBranch: "main",
+        remoteUrl: "https://github.com/acme/app.git",
+        worktreeRoot: "/repo/app",
+        isPaseoOwnedWorktree: false,
+        mainRepoRoot: null,
+      },
+    });
+  });
 });
 
 describe("mergeWorkspaces", () => {

packages/app/src/stores/session-store.ts

@@ -119,6 +119,9 @@ export interface WorkspaceDescriptor {
   status: WorkspaceDescriptorPayload["status"];
   diffStat: { additions: number; deletions: number } | null;
   scripts: WorkspaceDescriptorPayload["scripts"];
+  gitRuntime?: WorkspaceDescriptorPayload["gitRuntime"];
+  githubRuntime?: WorkspaceDescriptorPayload["githubRuntime"];
+  project?: ProjectPlacementPayload;
 }
 
 export function normalizeWorkspaceDescriptor(
@@ -136,6 +139,9 @@ export function normalizeWorkspaceDescriptor(
     status: payload.status,
     diffStat: payload.diffStat ?? null,
     scripts: (payload.scripts ?? []).map((s) => Object.assign({}, s)),
+    gitRuntime: payload.gitRuntime,
+    githubRuntime: payload.githubRuntime,
+    project: payload.project,
   };
 }