Add session eject feature and terminal UX improvements

- Add eject button for tmux sessions (keeps tmux running, removes from Spiceflow)
- Add refresh button to session settings for all providers
- Improve terminal controls: larger buttons, more zoom levels (50-150%), copy selection, paste clipboard, enter key
- Fix session navigation: properly reload when switching between sessions
- Update tmux screen presets to larger dimensions (fullscreen 260x48, desktop 120x48, landscape 80x24)
- Add testing documentation to CLAUDE.md
- Refactor E2E tests to use API-based cleanup

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

server/src/spiceflow/adapters/tmux.clj

@@ -339,9 +339,9 @@
 
 ;; Screen size presets for different device orientations
 (def ^:private screen-sizes
-  {:fullscreen {:width 180 :height 24}
-   :desktop    {:width 100 :height 24}
-   :landscape  {:width 65  :height 24}
+  {:fullscreen {:width 260 :height 48}
+   :desktop    {:width 120 :height 48}
+   :landscape  {:width 80  :height 24}
    :portrait   {:width 40  :height 24}})
 
 (defn resize-session
@@ -420,3 +420,24 @@
            :name new-name
            :working-dir (or (run-tmux "display-message" "-t" new-name "-p" "#{pane_current_path}")
                             (System/getProperty "user.home"))})))))
+
+(defn eject-session
+  "Eject a spiceflow-managed tmux session by removing the spiceflow prefix.
+   The tmux session continues running but is no longer managed by spiceflow.
+   Returns the new session name on success, nil on failure."
+  [session-name]
+  (when (and session-name (str/starts-with? session-name session-prefix))
+    (let [;; Remove the spiceflow- prefix to get the base name
+          base-name (subs session-name (count session-prefix))
+          output-file (output-file-path session-name)]
+      ;; Stop pipe-pane first
+      (run-tmux "pipe-pane" "-t" session-name)
+      ;; Clean up output file
+      (when output-file
+        (let [f (File. ^String output-file)]
+          (when (.exists f)
+            (.delete f))))
+      ;; Rename the session to remove spiceflow prefix
+      (when (rename-session session-name base-name)
+        (log/info "[Tmux] Ejected session" session-name "-> " base-name)
+        base-name))))

server/src/spiceflow/api/routes.clj

@@ -310,6 +310,25 @@
         (error-response 400 "Failed to import session. It may not exist or is already managed by spiceflow."))
       (error-response 400 "Session name is required"))))
 
+(defn eject-tmux-handler
+  "Eject a spiceflow-managed tmux session. Removes it from spiceflow but keeps the tmux session running."
+  [store]
+  (fn [request]
+    (let [id (get-in request [:path-params :id])]
+      (if (tmux-session-id? id)
+        (if (tmux/session-alive? id)
+          (if-let [new-name (tmux/eject-session id)]
+            (do
+              ;; Remove the session from the database (tmux sessions aren't in DB, but call anyway for safety)
+              (db/delete-session store id)
+              (json-response {:status "ejected"
+                              :old-name id
+                              :new-name new-name
+                              :message (str "Session ejected. You can attach to it with: tmux attach -t " new-name)}))
+            (error-response 500 "Failed to eject tmux session"))
+          (error-response 400 "Tmux session not alive"))
+        (error-response 400 "Not a tmux session")))))
+
 ;; Health check
 (defn health-handler
   [_request]
@@ -367,6 +386,7 @@
     ["/sessions/:id/terminal" {:get (terminal-capture-handler store)}]
     ["/sessions/:id/terminal/input" {:post (terminal-input-handler store broadcast-fn)}]
     ["/sessions/:id/terminal/resize" {:post (terminal-resize-handler store)}]
+    ["/sessions/:id/eject" {:post (eject-tmux-handler store)}]
     ["/tmux/external" {:get list-external-tmux-handler}]
     ["/tmux/import" {:post import-tmux-handler}]
     ["/push/vapid-key" {:get (vapid-key-handler push-store)}]