logiguard fork v2: patched GPUI on verified 8c74db0 tree

Rebuilt from the exact zed-industries/zed @ 8c74db00c4053d6c0a9037863d7bd048658da4ca
tree (previous orphan was based on a stale/wrong fetch). Same 3-file patch:
  - serial.rs: add SerialKind::KeyboardEnter
  - client.rs: store wl_keyboard.enter serial; add latest_serial_of()
  - window.rs: activate() uses keyboard-enter serial (Mutter focus gate)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

assets/prompts/terminal_assistant_prompt.hbs

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+You are an expert terminal user.
+You will be given a description of a command and you need to respond with a command that matches the description.
+Do not include markdown blocks or any other text formatting in your response, always respond with a single command that can be executed in the given shell.
+Current OS name is '{{os}}', architecture is '{{arch}}'.
+{{#if shell}}
+Current shell is '{{shell}}'.
+{{/if}}
+{{#if working_directory}}
+Current working directory is '{{working_directory}}'.
+{{/if}}
+{{#if latest_output}}
+Latest non-empty terminal output:
+{{#each latest_output as |line|}}
+{{line}}
+{{/each}}
+{{/if}}
+Here is the description of the command:
+{{{user_prompt}}}