feat(lua): install Lua meta types (idursun#617)

* feat(lua): generate types.lua meta file

* feat(lua): create .luarc.json file if doesn't exist

* refactor(lua): simplify Lua type generation

fix(rebase): use source prefix for insert between

fixes idursun#598

fix(startup): cache terminal background detection

refactor(render): remove display context inspection api

fix: update list rendering in git, bookmarks and custom commands modals

Previous rendering code relied on rendering full string (including the bg style) over the modal window box but the new system is only rendering to the relevant areas while leaving some gaps. Fixed using AddFill for the whole area and calling AddDraw on skip lines.

idursun#535

fix(preview): update preview window after squash operation (idursun#518)

Root cause: startSquash() called SetCursor() to move to the parent revision
but never emitted a SelectionChangedMsg. The preview panel only refreshes
when it receives that message, so it stayed stale until the user pressed
j/k which does emit the message via updateSelection().

Fix: batch updateSelection() alongside the operation init command in
startSquash(), matching the pattern used by all other cursor-moving
operations.

Closes idursun#516

ui,preview: fix preview pane ctrl-u/d scrolling (idursun#472)

Commit 8481b92 broke ctrl-u/d scrolling in the preview pane, see below
code:
```
if common.IsInputMessage(msg) {
    if m.oplog != nil {
        cmds = append(cmds, m.oplog.Update(msg))
    } else {
        cmds = append(cmds, m.revisions.Update(msg))
    }
    return tea.Batch(cmds...)
}
```
This causes unhandled key messages to be routed only to oplog or
revisions, and then returns early, so they never reach the preview
model's Update() call which happens later in the function.


This fix groups preview related commands and make sure they are always
handled.

Also, added a YOffset() method to internal/ui/preview/preview.go to
expose the viewport's Y offset for testing purposes.

status: fix exec command history not applied (idursun#458)

Previously, in `exec jj` mode, typing triggers fuzzy/regex suggestions
from command history. However, when selecting a suggestion and pressing
Enter, the command executed was still the original typed input instead
of the selected history command.

The issue was that, the input field's value isn't updated upon entry
selection in command history.
This fix checks if there's a selected match in the fuzzy suggestions
list before executing. If there is one, it:
1. Gets the selected match string
2. Strips the single quotes that SelectedMatch wraps around the value
3. Updates the input value with so it also gets saved to history
   correctly

feat: custom commands with sequence keys (idursun#420)

describe: catch cursor blinking to avoid unnecessary rendering (idurs…

…un#404)

Currently, cursor.Blink msg is not being filtered out and it causes
describe view to re-render unnecessarily and height is being calculated
on every blinking. 

This change adds a filter to catch and ignore blinking messages.