feat: floating control bar, throttled console, wrapped values, Codicon icons

Major v3 fixes driven by live-debugging feedback:

- Control bar: replace vim.o.statusline override (lualine fights it) with
  a 1-row floating window pinned above the statusline. Shows state chip
  (READY/RUNNING/PAUSED) + seven clickable Codicon controls + dap.status().
  Survives resize via VimResized autocmd. Fully independent of lualine.
- Console refresh: trailing-edge throttle at config.console_refresh_ms
  (default 50ms = 20 Hz ceiling). Targets console windows via nvim_win_call
  + redraw! to avoid screen-cache miss. Chatty programs can't DOS the editor.
- Modal keys in dapui panes: install synchronously on FileType (drop inner
  vim.schedule); all modal keys get nowait=true (was continue-only) so
  single-key presses aren't swallowed by <leader>d* prefix matching.
- Wrap in dapui panes: wrap=true + breakindent + showbreak="  ↳ " so long
  register values stay visible inside the pane without bleeding into the
  source window. Safety valve at config.max_value_width (default 2000,
  set 0 to disable) truncates only pathological multi-KB dumps with "…".
- Smart q: context-aware terminate. If a session is running, q calls
  dap.terminate() and stays in debug mode (so user can read the console
  postmortem). If no session, q exits debug mode. Removes quit_exits_mode.
- Icons: full Nerd Font Codicon set for signs, control bar buttons, pane
  titles, and debug badge. 👈 emoji in the paused-line vtext pairs with
  👉 in the gutter — fingers literally point at the paused line from both
  sides.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

tests/test_config.lua

@@ -8,7 +8,9 @@ assert_eq(opts.keys.breakpoint, "x", "default modal breakpoint key")
 assert_eq(opts.global_keys.toggle, "<leader>dd", "default toggle key")
 assert_eq(opts.global_keys.breakpoint, "<leader>dx", "default global breakpoint key")
 assert_eq(opts.help_on_enter, true, "default help_on_enter")
-assert_eq(opts.quit_exits_mode, true, "default quit_exits_mode")
+assert_eq(opts.stop_on_entry_when_no_breakpoints, true, "default stop_on_entry_when_no_breakpoints")
+assert_eq(opts.max_value_width, 2000, "default max_value_width")
+assert_eq(opts.console_refresh_ms, 50, "default console_refresh_ms")
 
 -- partial key override
 opts = config.merge({ keys = { continue = "g" } })
@@ -24,9 +26,9 @@ opts = config.merge({ global_keys = { toggle = "<leader>D" } })
 assert_eq(opts.global_keys.toggle, "<leader>D", "overridden toggle key")
 assert_eq(opts.global_keys.breakpoint, "<leader>dx", "preserved breakpoint key")
 
--- quit_exits_mode override
-opts = config.merge({ quit_exits_mode = false })
-assert_eq(opts.quit_exits_mode, false, "overridden quit_exits_mode")
+-- max_value_width override
+opts = config.merge({ max_value_width = 0 })
+assert_eq(opts.max_value_width, 0, "overridden max_value_width")
 
 -- merge doesn't mutate defaults
 config.merge({ keys = { continue = "z" } })