chore: initial backup of Claude Code configuration

Includes: CLAUDE.md, settings.json, agents, commands, rules, skills,
hooks, contexts, evals, get-shit-done, plugin configs (installed list
and marketplace sources). Excludes credentials, runtime caches,
telemetry, session data, and plugin binary cache.

commands/gsd/settings.md

@@ -0,0 +1,36 @@
+---
+name: gsd:settings
+description: Configure GSD workflow toggles and model profile
+allowed-tools:
+  - Read
+  - Write
+  - Bash
+  - AskUserQuestion
+---
+
+<objective>
+Interactive configuration of GSD workflow agents and model profile via multi-question prompt.
+
+Routes to the settings workflow which handles:
+- Config existence ensuring
+- Current settings reading and parsing
+- Interactive 5-question prompt (model, research, plan_check, verifier, branching)
+- Config merging and writing
+- Confirmation display with quick command references
+</objective>
+
+<execution_context>
+@C:/Users/yaoji/.claude/get-shit-done/workflows/settings.md
+</execution_context>
+
+<process>
+**Follow the settings workflow** from `@C:/Users/yaoji/.claude/get-shit-done/workflows/settings.md`.
+
+The workflow handles all logic including:
+1. Config file creation with defaults if missing
+2. Current config reading
+3. Interactive settings presentation with pre-selection
+4. Answer parsing and config merging
+5. File writing
+6. Confirmation display
+</process>