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/instructions.md

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+<!-- Powered by BMAD-CORE™ -->
+
+# Acceptance Test-Driven Development (ATDD)
+
+**Workflow ID**: `_bmad/tea/testarch/atdd`
+**Version**: 5.0 (Step-File Architecture)
+
+---
+
+## Overview
+
+Generates **failing acceptance tests** before implementation (TDD red phase), plus an implementation checklist. Produces tests at appropriate levels (E2E/API/Component) with supporting fixtures and helpers.
+
+---
+
+## WORKFLOW ARCHITECTURE
+
+This workflow uses **step-file architecture**:
+
+- **Micro-file Design**: Each step is self-contained
+- **JIT Loading**: Only the current step file is in memory
+- **Sequential Enforcement**: Execute steps in order without skipping
+
+---
+
+## INITIALIZATION SEQUENCE
+
+### 1. Configuration Loading
+
+From `workflow.yaml`, resolve:
+
+- `config_source`, `test_artifacts`, `user_name`, `communication_language`, `document_output_language`, `date`
+- `test_dir`
+
+### 2. First Step
+
+Load, read completely, and execute:
+`{project-root}/_bmad/tea/workflows/testarch/atdd/steps-c/step-01-preflight-and-context.md`
+
+### 3. Resume Support
+
+If the user selects **Resume** mode, load, read completely, and execute:
+`{project-root}/_bmad/tea/workflows/testarch/atdd/steps-c/step-01b-resume.md`
+
+This checks the output document for progress tracking frontmatter and routes to the next incomplete step.