chore: bootstrap repo with chunks 1 and 2

Establishes the global AI development config repo from scratch:

- Chunk 1: repo skeleton, install.sh, statusline, deploy manifest
- Chunk 2: core instructions (coding/git/testing), CLAUDE.md rewrite
  (always-on + content index two-tier model), docs restructure,
  6 ADRs, ROADMAP.md, .gitkeep placeholders
- Bootstrap skills in .claude/skills/ (to be catalogued and migrated
  to .agents/skills/ in Chunk 3)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

scripts/deploy-manifest.sh

@@ -0,0 +1,25 @@
+#!/usr/bin/env bash
+# Deployment manifest — sourced by install.sh and sync.sh (Chunk 6).
+# All paths: src relative to REPO_ROOT, dest relative to HOME.
+# Format: "src:dest"
+
+# Individual files — copied verbatim
+DEPLOY_FILES=(
+  "providers/claude-code/CLAUDE.md:.claude/CLAUDE.md"
+  "providers/claude-code/settings.json:.claude/settings.json"
+)
+
+# Files that also need the executable bit set
+DEPLOY_EXECUTABLES=(
+  "providers/claude-code/statusline-command.sh:.claude/statusline-command.sh"
+)
+
+# Directories — destination is fully replaced on each deploy (rm -rf + cp -r)
+DEPLOY_DIRS=(
+  "core:.claude/core"
+)
+
+# Empty directories to create if absent
+DEPLOY_EMPTY_DIRS=(
+  ".agents/skills"
+)