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/suggest-compact.sh

@@ -0,0 +1,24 @@
+#!/bin/bash
+# Suggest /compact after ~50 tool calls
+# Event: PreToolUse | Matcher: Edit|Write
+# Profile: standard
+# Non-blocking reminder (exit 0)
+
+COUNTER_FILE="${CLAUDE_PROJECT_DIR:-.}/.claude/hooks/.tool-counter"
+
+# Initialize counter if it doesn't exist
+if [ ! -f "$COUNTER_FILE" ]; then
+  echo "0" > "$COUNTER_FILE"
+fi
+
+# Increment counter
+COUNT=$(cat "$COUNTER_FILE" 2>/dev/null || echo "0")
+COUNT=$((COUNT + 1))
+echo "$COUNT" > "$COUNTER_FILE"
+
+# Suggest compact every 50 calls
+if [ $((COUNT % 50)) -eq 0 ]; then
+  echo "Context optimization: $COUNT tool calls in this session. Consider running /strategic-compact if context feels bloated." >&2
+fi
+
+exit 0