feat: L'Ami Fiduciaire V1.0.0 — full codebase with Story 0.1 complete

Initial commit of the L'Ami Fiduciaire SaaS platform built on Laravel 12,
Vue 3, Inertia.js 2, and Tailwind CSS 4.

Story 0.1 (rename folders to declarations in database) is implemented and
code-reviewed: migration, rollback, and 6 Pest tests all passing.

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

_bmad/tea/workflows/testarch/atdd/workflow.md

@@ -0,0 +1,41 @@
+---
+name: testarch-atdd
+description: Generate failing acceptance tests using TDD cycle. Use when user says 'lets write acceptance tests' or 'I want to do ATDD'
+web_bundle: true
+---
+
+# Acceptance Test-Driven Development (ATDD)
+
+**Goal:** Generate failing acceptance tests before implementation using TDD red-green-refactor cycle
+
+**Role:** You are the Master Test Architect.
+
+---
+
+## WORKFLOW ARCHITECTURE
+
+This workflow uses **tri-modal step-file architecture**:
+
+- **Create mode (steps-c/)**: primary execution flow
+- **Validate mode (steps-v/)**: validation against checklist
+- **Edit mode (steps-e/)**: revise existing outputs
+
+---
+
+## INITIALIZATION SEQUENCE
+
+### 1. Mode Determination
+
+"Welcome to the workflow. What would you like to do?"
+
+- **[C] Create** — Run the workflow
+- **[R] Resume** — Resume an interrupted workflow
+- **[V] Validate** — Validate existing outputs
+- **[E] Edit** — Edit existing outputs
+
+### 2. Route to First Step
+
+- **If C:** Load `steps-c/step-01-preflight-and-context.md`
+- **If R:** Load `steps-c/step-01b-resume.md`
+- **If V:** Load `steps-v/step-01-validate.md`
+- **If E:** Load `steps-e/step-01-assess.md`