feat: expand agents (10), skills (20), and hooks (11) with profile system

Agents:
- Add YAML frontmatter (model, tools) to all 7 existing agents
- New agents: planner (opus), build-error-resolver (sonnet), loop-operator (sonnet)

Skills:
- search-first: research before building (Adopt/Extend/Compose/Build)
- verification-loop: full quality gate pipeline (Build→TypeCheck→Lint→Test→Security→Diff)
- strategic-compact: when and how to run /compact effectively
- autonomous-loops: 6 patterns for autonomous agent workflows
- continuous-learning: extract session learnings into instincts

Hooks:
- Profile system (minimal/standard/strict) via run-with-profile.sh
- config-protection: block linter/formatter config edits (standard)
- suggest-compact: remind about /compact every ~50 tool calls (standard)
- auto-tmux-dev: suggest tmux for dev servers (standard)
- session-save/session-load: persist and restore session context (Stop/SessionStart)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.claude/hooks/config-protection.sh

@@ -0,0 +1,43 @@
+#!/bin/bash
+# Block modifications to linter/formatter configuration files
+# Event: PreToolUse | Matcher: Edit|Write
+# Profile: standard
+# Exit 2 = block, Exit 0 = allow
+
+INPUT=$(cat)
+FILE_PATH=$(echo "$INPUT" | jq -r '.tool_input.file_path // empty')
+
+if [ -z "$FILE_PATH" ]; then
+  exit 0
+fi
+
+# Protected config files (linters, formatters, build configs)
+PROTECTED_CONFIGS=(
+  ".eslintrc"
+  ".eslintrc.js"
+  ".eslintrc.json"
+  ".eslintrc.yml"
+  "eslint.config.js"
+  "eslint.config.mjs"
+  ".prettierrc"
+  ".prettierrc.js"
+  ".prettierrc.json"
+  "prettier.config.js"
+  "biome.json"
+  "biome.jsonc"
+  ".editorconfig"
+  "tsconfig.json"
+  "tsconfig.base.json"
+)
+
+FILENAME=$(basename "$FILE_PATH")
+
+for config in "${PROTECTED_CONFIGS[@]}"; do
+  if [ "$FILENAME" = "$config" ]; then
+    echo "Blocked: modifying config file '$FILENAME'. These files affect the entire project." >&2
+    echo "If this change is intentional, disable this hook: CLAUDE_DISABLED_HOOKS=config-protection.sh" >&2
+    exit 2
+  fi
+done
+
+exit 0