chore: init project structure

Discovery synthesis, docs tree, Python src layout, CLAUDE.md, pyproject.toml.

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

README.md

@@ -1,3 +1,23 @@
 # gitea-dashboard
 
-CLI Python dashboard for Gitea repos status (issues, releases, milestones)
+Dashboard CLI affichant l'etat des repos Gitea : issues ouvertes, dernieres releases, milestones.
+
+## Installation
+
+```bash
+pip install -e .
+```
+
+## Configuration
+
+Variables d'environnement requises : voir `CLAUDE.md` (section "Variables d'environnement").
+
+## Usage
+
+```bash
+gitea-dashboard
+```
+
+## Licence
+
+Usage personnel.