Revert "Add interactive edit mode with floating popup"

This reverts commit 99f07aef82.

README.md

@@ -67,10 +67,7 @@ Create `~/.config/aman/config.json` (or let `aman` create it automatically on fi
 
 ```json
 {
-  "daemon": {
-    "hotkey": "Cmd+m",
-    "edit_hotkey": "Cmd+Shift+m"
-  },
+  "daemon": { "hotkey": "Cmd+m" },
   "recording": { "input": "0" },
   "stt": { "model": "base", "device": "cpu" },
   "injection": {
@@ -94,7 +91,6 @@ Hotkey notes:
 
 - Use one key plus optional modifiers (for example `Cmd+m`, `Super+m`, `Ctrl+space`).
 - `Super` and `Cmd` are equivalent aliases for the same modifier.
-- `daemon.hotkey` and `daemon.edit_hotkey` must be different.
 
 AI cleanup is always enabled and uses the locked local Llama-3.2-3B GGUF model
 downloaded to `~/.cache/aman/models/` during daemon initialization.
@@ -131,21 +127,8 @@ systemctl --user enable --now aman
 - Press the hotkey once to start recording.
 - Press it again to stop and run STT.
 - Press `Esc` while recording to cancel without processing.
-- `Esc` is only captured globally while dictation recording is active.
 - Transcript contents are logged only when `-v/--verbose` is used.
 
-Edit mode:
-
-- Copy text to clipboard and press `daemon.edit_hotkey`.
-- Aman opens an editable popup with the clipboard snapshot and immediately starts recording an instruction.
-- If clipboard is empty, the popup opens with empty text so the first instruction can create content.
-- Press `daemon.edit_hotkey` again to stop recording and apply the instruction.
-- Repeat to iterate with more voice instructions.
-- Press `Enter` to close the popup and inject the final text.
-- Press `Ctrl+C` to copy final text to clipboard and close the popup (no injection).
-- Press `Esc` to cancel the edit session completely.
-- While edit mode is open, the normal dictation hotkey is ignored.
-
 Wayland note:
 
 - Running under Wayland currently exits with a message explaining that it is not supported yet.