Agent computer: terminal (tmux + drives + tabs), Obsidian vault, UI polish

Terminal app (xterm ⇄ WebSocket ⇄ per-agent themed container):
- zsh + oh-my-zsh + powerlevel10k image (agent-terminal), runs as uid 65532 to
  share read-write ownership of the file-drive volume with the server.
- Interactive PTY in cm-sandbox (bollard exec tty/attach + resize) + a
  TerminalManager; ticket-authed WS bridge routed straight to the backend via a
  Traefik PathRegexp(/ws) rule. MOTD greets the user by name.
- tmux resumable sessions; multi-tab (one tmux session per tab, same container),
  drag-to-reorder, rename, and a Save that persists named tabs to the server
  (terminal_tabs, migration 0014) so they survive logout / a new device.
- Files drives mounted per-agent (subpath) at ~/drives/{documents,received,
  shared}; a reconciler keeps the Files app's index in sync with terminal writes.
  Storage moved to a shared `filedata` volume (CLAWMATES_STORAGE__DATA_DIR).

Obsidian vault (a markdown "second brain" per agent):
- New `vault` FileDrive (migration 0015) mounted into the terminal at ~/obsidian;
  a file-content read route; a purple Obsidian tile + a vault viewer app.

Computer UI:
- Draggable computer-panel width (min = phone preset) keeping the size presets.
- Green Terminal glyph, "Claw Chat" → "Chat", colored gradient-outline app icons.
- Agent page: avatar↔activity-grid spacing + larger, uniform section fonts with
  colored section-tinted tag chips.

Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>

crates/cm-db/src/repo/terminal_tabs.rs

@@ -0,0 +1,44 @@
+//! Per-user saved terminal tab layout for an agent (named tabs + their tmux
+//! sessions), so a user can restore their terminal after logging back in.
+
+use cm_domain::{AgentId, UserId, WorkspaceId};
+use sqlx::{PgPool, Row};
+
+use crate::DbError;
+
+/// The saved layout JSON for `(user, agent)`, or None if nothing saved.
+pub async fn get(
+    pool: &PgPool,
+    user_id: UserId,
+    agent_id: AgentId,
+) -> Result<Option<serde_json::Value>, DbError> {
+    let row = sqlx::query("SELECT layout FROM terminal_tabs WHERE user_id = $1 AND agent_id = $2")
+        .bind(user_id.as_uuid())
+        .bind(agent_id.as_uuid())
+        .fetch_optional(pool)
+        .await?;
+    Ok(row.map(|r| r.get::<serde_json::Value, _>("layout")))
+}
+
+/// Save (replace) the layout for `(user, agent)`.
+pub async fn upsert(
+    pool: &PgPool,
+    workspace_id: WorkspaceId,
+    user_id: UserId,
+    agent_id: AgentId,
+    layout: &serde_json::Value,
+) -> Result<(), DbError> {
+    sqlx::query(
+        "INSERT INTO terminal_tabs (user_id, agent_id, workspace_id, layout, updated_at)
+         VALUES ($1, $2, $3, $4, now())
+         ON CONFLICT (user_id, agent_id)
+         DO UPDATE SET layout = $4, workspace_id = $3, updated_at = now()",
+    )
+    .bind(user_id.as_uuid())
+    .bind(agent_id.as_uuid())
+    .bind(workspace_id.as_uuid())
+    .bind(layout)
+    .execute(pool)
+    .await?;
+    Ok(())
+}