refactor(glmt)!: simplify with keyword-based thinking control (v3.4.3)

YAGNI/KISS/DRY refactor removing 926 LOC of unused complexity:

- Replace budget-calculator + task-classifier with 40 LOC keyword detection

- Add 4-tier thinking: think < think hard < think harder < ultrathink

- Remove env vars: CCS_GLMT_THINKING_BUDGET, CCS_GLMT_STREAMING, CCS_GLMT_FORCE_ENGLISH

- Add streaming auto-fallback on error

- Rename CCS_DEBUG_LOG → CCS_DEBUG (backward compatible)

- Fix ultrathink effort: high → max

- Fix GLMT proxy path after restructure

Test coverage: 27 → 35 tests, all passing

Net change: +251, -1177 lines (-926 LOC, 78% reduction)

BREAKING CHANGE: Removed CCS_GLMT_THINKING_BUDGET, CCS_GLMT_STREAMING, CCS_GLMT_FORCE_ENGLISH env vars

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@kaitranntt/ccs",
-  "version": "3.4.2",
+  "version": "3.4.3",
   "description": "Claude Code Switch - Instant profile switching between Claude Sonnet 4.5 and GLM 4.6",
   "keywords": [
     "cli",