feat: add event-driven architecture with scope resolution

- Add event queue system (queue.lua) with priority-based processing
- Add patch system (patch.lua) with staleness detection via changedtick
- Add confidence scoring (confidence.lua) with 5 weighted heuristics
- Add async worker wrapper (worker.lua) with timeout handling
- Add scheduler (scheduler.lua) with completion-aware injection
- Add Tree-sitter scope resolution (scope.lua) for functions/methods/classes
- Add intent detection (intent.lua) for complete/refactor/fix/add/etc
- Add tag precedence rules (first tag in scope wins)
- Update autocmds to emit events instead of direct processing
- Add scheduler config options (ollama_scout, escalation_threshold)
- Update prompts with scope-aware context
- Update README with emojis and new features
- Update documentation (llms.txt, CHANGELOG.md, doc/codetyper.txt)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

lua/codetyper/init.lua

@@ -1,8 +1,10 @@
 ---@mod codetyper Codetyper.nvim - AI-powered coding partner
 ---@brief [[
 --- Codetyper.nvim is a Neovim plugin that acts as your coding partner.
---- It uses LLM APIs (Claude, Ollama) to help you write code faster
---- using special `.coder.*` files and inline prompt tags.
+--- It uses LLM APIs (Claude, OpenAI, Gemini, Copilot, Ollama) to help you
+--- write code faster using special `.coder.*` files and inline prompt tags.
+--- Features an event-driven scheduler with confidence scoring and
+--- completion-aware injection timing.
 ---@brief ]]
 
 local M = {}
@@ -41,6 +43,12 @@ function M.setup(opts)
   -- Initialize tree logging (creates .coder folder and initial tree.log)
   tree.setup()
 
+  -- Start the event-driven scheduler if enabled
+  if M.config.scheduler and M.config.scheduler.enabled then
+    local scheduler = require("codetyper.agent.scheduler")
+    scheduler.start(M.config.scheduler)
+  end
+
   M._initialized = true
 
   -- Auto-open Ask panel after a short delay (to let UI settle)