- Fix uninitialized delimiter bug in syntax highlighter
- Comment out 6 unused functions
- Restore standard cursor goal column behavior

Implements a comprehensive language server management system inspired by
Neovim's Mason, providing users an easy way to discover and install LSP
servers directly from the editor.

Features:
- First-run experience: LSP Server Manager automatically appears on first launch
- Alt+M keybinding: Toggle the manager panel anytime
- 20 language servers supported including Python, C/C++, Rust, Go, JavaScript/TypeScript, Lua, Ruby, Java, and more
- Installation with confirmation: Select a server, press Enter to see install command, Y to confirm
- Server status detection: Uses 'which' to detect installed servers
- Navigation: j/k or arrows to navigate, r to refresh, Esc/q to close
- State persistence: First-run state stored in ~/.config/fac/state.json

New modules:
- src/workspace/app_state_module.f90: First-run detection and state persistence
- src/lsp/server_detection_module.f90: Detect installed language servers
- src/lsp/server_installer_module.f90: Execute installation commands
- src/ui/lsp_server_installer_panel_module.f90: Modal UI panel

Additional fixes:
- Fixed modal panel border alignment (Command Palette & LSP Server Manager)
- Removed circular dependency in unified_search_module
- Updated Makefile with new modules in correct dependency order

Adds comprehensive Language Server Protocol (LSP) integration:

LSP Features:
- Auto-completion (Ctrl+Space)
- Hover Information (Ctrl+H)
- Go to Definition (F12)
- Find References (Shift+F12)
- Rename Symbol (F2)
- Code Actions (Ctrl+.)
- Document Symbols (Ctrl+Shift+O)
- Workspace Symbols (F6)
- Signature Help (auto on '(' and ',')
- Real-time Diagnostics (F8/Shift+F8)
- Document Formatting (Shift+Alt+F)

UI Enhancements:
- Command Palette (Ctrl+P) - top-center VSCode style
- Syntax highlighting for Python, C, Fortran, Rust, Go, JS/TS
- Off-canvas panels for references, symbols, diagnostics
- Search: Ctrl+F cycling, history, match case/word/regex toggles

Multi-Server Architecture:
- Concurrent language server support
- Server-attributed diagnostics
- Automatic server detection and lifecycle management

Bug Fixes:
- Tab/buffer sync issues on F6 navigation
- Cursor position after Shift+F12 jump
- Viewport update on search cycling
- Multiple rename on same symbol
- Code actions applying to wrong tab

# Conflicts:
#	.gitignore

- Fix Alt+. code actions for all tabs by sending LSP didOpen notification
  when tabs are created via file tree, jump-to-definition, or workspace restore
- Fix Enter key double-processing on offcanvas panels (code actions, references,
  symbols) - Enter was both executing action AND inserting newline in editor
- Fix Fortran syntax highlighting when switching between file types by auto-
  updating the syntax highlighter when editor filename changes
- Enable CAP_CODE_ACTIONS for Fortran (fortls)
- Remove extensive debug logging from command_handler_module.f90 (550+ lines)

- Multiple LSP servers per file type (Pyright + Ruff for Python)
- Capability-based request routing (rename→Pyright, code actions→Ruff)
- Diagnostics track source server; code actions only see own diagnostics