docs: map existing codebase

- stack.md (68 lines) - PHP/MySQL/Apache stack, vendored libraries
- architecture.md (131 lines) - Custom MVC CMS, dual-layer (front/admin)
- structure.md (170 lines) - Directory layout and conventions
- conventions.md (98 lines) - PHP snake_case, SCSS $c/$f prefixes, jQuery patterns
- testing.md (49 lines) - No automated tests detected
- integrations.md (111 lines) - Google Maps, PHPMailer, Pixieset, Facebook
- concerns.md (150 lines) - Critical security issues: hardcoded creds, MD5, unserialize
- db_schema.md (260 lines) - ~32 tables with pp_ prefix, inferred from source
- tech_changelog.md (9 lines) - Initial log entry

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

.paul/STATE.md

@@ -0,0 +1,53 @@
+# Project State
+
+## Project Reference
+
+See: .paul/PROJECT.md (updated 2026-05-05)
+
+**Core value:** Klienci mogą zapoznać się z ofertą okien i skontaktować się z firmą.
+**Current focus:** Project initialized — ready for planning
+
+## Current Position
+
+Milestone: v0.1 Initial Release
+Phase: Not yet defined
+Plan: None yet
+Status: Ready to create roadmap and first PLAN
+Last activity: 2026-05-05 — Project initialized
+
+Progress:
+- Milestone: [░░░░░░░░░░] 0%
+
+## Loop Position
+
+Current loop state:
+```
+PLAN ──▶ APPLY ──▶ UNIFY
+  ○        ○        ○     [Ready for first PLAN]
+```
+
+## Accumulated Context
+
+### Codebase Mapped
+Date: 2026-05-05
+Documents: `.paul/codebase/` (9 files)
+Key findings: Custom PHP MVC CMS, Medoo ORM, MySQL, no tests, critical security issues (hardcoded credentials, MD5 passwords, unserialize on cookies, SQL injection risks)
+
+### Decisions
+None yet.
+
+### Deferred Issues
+None yet.
+
+### Blockers/Concerns
+Multiple critical security vulnerabilities documented in `.paul/codebase/concerns.md`
+
+## Session Continuity
+
+Last session: 2026-05-05
+Stopped at: Project initialization complete
+Next action: Run /paul:plan to define phases and first plan
+Resume file: .paul/PROJECT.md
+
+---
+*STATE.md — Updated after every significant action*