feat(cli,display): add --health check and repo description column

Add --health option to verify Gitea connectivity and display version.
Add Description column (truncated at 40 chars) with --no-desc to hide
it. Add get_version() method to GiteaClient.

fixes #14
fixes #15

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

src/gitea_dashboard/display.py

@@ -93,6 +93,13 @@ def _colorize_milestone_due(due_on: str | None) -> str:
     return "green"
 
 
+def _truncate(text: str, max_length: int = 40) -> str:
+    """Tronque le texte a max_length caracteres avec '...' si necessaire."""
+    if len(text) <= max_length:
+        return text
+    return text[:max_length] + "..."
+
+
 def sort_repos(repos: list[RepoData], sort_key: str) -> list[RepoData]:
     """Trie la liste des repos selon le critere donne.
 
@@ -126,15 +133,18 @@ def render_dashboard(
     repos: list[RepoData],
     console: Console | None = None,
     sort_key: str = "name",
+    show_description: bool = True,
 ) -> None:
     """Affiche le dashboard complet dans le terminal.
 
-    - Tableau principal : nom repo, indicateurs (fork/archive/mirror),
-      issues ouvertes, derniere release (tag + date relative)
+    - Tableau principal : nom repo, description (optionnelle, tronquee a 40 chars),
+      indicateurs (fork/archive/mirror), issues ouvertes, derniere release
     - Section milestones : par repo ayant des milestones,
       nom, progression (closed/total), date echeance
 
     Le parametre console permet l'injection pour les tests.
+    Si show_description est True, ajoute une colonne "Description"
+    entre "Repo" et "Issues", tronquee a 40 caracteres.
     """
     if console is None:
         console = Console()
@@ -149,6 +159,8 @@ def render_dashboard(
     # Tableau principal
     table = Table(title="Gitea Dashboard")
     table.add_column("Repo", style="bold")
+    if show_description:
+        table.add_column("Description")
     table.add_column("Issues", justify="right")
     table.add_column("Release")
     table.add_column("Dernier commit")
@@ -162,13 +174,19 @@ def render_dashboard(
             _format_relative_date(repo.last_commit_date) if repo.last_commit_date else "\u2014"
         )
 
-        table.add_row(
-            name,
-            f"[{issues_style}]{issues_str}[/{issues_style}]",
-            release_str,
-            commit_str,
+        row = [name]
+        if show_description:
+            row.append(_truncate(repo.description or ""))
+        row.extend(
+            [
+                f"[{issues_style}]{issues_str}[/{issues_style}]",
+                release_str,
+                commit_str,
+            ]
         )
 
+        table.add_row(*row)
+
     console.print(table)
 
     # Section milestones — uniquement si au moins un repo en a