fix: add repo auto-detection and improve org validation

1. Repo Auto-Detection (config.py):
   - Added _detect_repo_from_git() to parse git remote URL
   - Supports SSH, SSH short, HTTPS, HTTP URL formats
   - Falls back to git remote when GITEA_REPO not set

2. Organization Validation (gitea_client.py):
   - Changed is_org_repo() to use /orgs/{owner} endpoint
   - Added _is_organization() method for reliable org detection
   - Fixes issue where owner.type was null in Gitea API

3. Tests:
   - Added 6 tests for git URL parsing
   - Added 3 tests for org detection

Fixes #64

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

mcp-servers/gitea/mcp_server/config.py

@@ -4,10 +4,13 @@ Configuration loader for Gitea MCP Server.
 Implements hybrid configuration system:
 - System-level: ~/.config/claude/gitea.env (credentials)
 - Project-level: .env (repository specification)
+- Auto-detection: Falls back to git remote URL parsing
 """
 from pathlib import Path
 from dotenv import load_dotenv
 import os
+import re
+import subprocess
 import logging
 from typing import Dict, Optional
 
@@ -59,6 +62,12 @@ class GiteaConfig:
         self.api_token = os.getenv('GITEA_API_TOKEN')
         self.repo = os.getenv('GITEA_REPO')  # Optional, must be owner/repo format
 
+        # Auto-detect repo from git remote if not specified
+        if not self.repo:
+            self.repo = self._detect_repo_from_git()
+            if self.repo:
+                logger.info(f"Auto-detected repository from git remote: {self.repo}")
+
         # Detect mode
         if self.repo:
             self.mode = 'project'
@@ -96,3 +105,71 @@ class GiteaConfig:
                 f"Missing required configuration: {', '.join(missing)}\n"
                 "Check your ~/.config/claude/gitea.env file"
             )
+
+    def _detect_repo_from_git(self) -> Optional[str]:
+        """
+        Auto-detect repository from git remote origin URL.
+
+        Supports URL formats:
+        - SSH: ssh://git@host:port/owner/repo.git
+        - SSH short: git@host:owner/repo.git
+        - HTTPS: https://host/owner/repo.git
+        - HTTP: http://host/owner/repo.git
+
+        Returns:
+            Repository in 'owner/repo' format, or None if detection fails
+        """
+        try:
+            result = subprocess.run(
+                ['git', 'remote', 'get-url', 'origin'],
+                capture_output=True,
+                text=True,
+                timeout=5
+            )
+            if result.returncode != 0:
+                logger.debug("No git remote 'origin' found")
+                return None
+
+            url = result.stdout.strip()
+            return self._parse_git_url(url)
+
+        except subprocess.TimeoutExpired:
+            logger.warning("Git command timed out")
+            return None
+        except FileNotFoundError:
+            logger.debug("Git not available")
+            return None
+        except Exception as e:
+            logger.debug(f"Failed to detect repo from git: {e}")
+            return None
+
+    def _parse_git_url(self, url: str) -> Optional[str]:
+        """
+        Parse git URL to extract owner/repo.
+
+        Args:
+            url: Git remote URL
+
+        Returns:
+            Repository in 'owner/repo' format, or None if parsing fails
+        """
+        # Remove .git suffix if present
+        url = re.sub(r'\.git$', '', url)
+
+        # SSH format: ssh://git@host:port/owner/repo
+        ssh_match = re.match(r'ssh://[^/]+/(.+/.+)$', url)
+        if ssh_match:
+            return ssh_match.group(1)
+
+        # SSH short format: git@host:owner/repo
+        ssh_short_match = re.match(r'git@[^:]+:(.+/.+)$', url)
+        if ssh_short_match:
+            return ssh_short_match.group(1)
+
+        # HTTPS/HTTP format: https://host/owner/repo
+        http_match = re.match(r'https?://[^/]+/(.+/.+)$', url)
+        if http_match:
+            return http_match.group(1)
+
+        logger.warning(f"Could not parse git URL: {url}")
+        return None

mcp-servers/gitea/mcp_server/gitea_client.py

@@ -554,10 +554,33 @@ class GiteaClient:
         return response.json()
 
     def is_org_repo(self, repo: Optional[str] = None) -> bool:
-        """Check if repository belongs to an organization (not a user)."""
-        info = self.get_repo_info(repo)
-        owner_type = info.get('owner', {}).get('type', '')
-        return owner_type.lower() == 'organization'
+        """
+        Check if repository belongs to an organization (not a user).
+
+        Uses the /orgs/{owner} endpoint to reliably detect organizations,
+        as the owner.type field in repo info may be null in some Gitea versions.
+        """
+        owner, _ = self._parse_repo(repo)
+        return self._is_organization(owner)
+
+    def _is_organization(self, owner: str) -> bool:
+        """
+        Check if an owner is an organization by querying the orgs endpoint.
+
+        Args:
+            owner: The owner name to check
+
+        Returns:
+            True if owner is an organization, False if user or unknown
+        """
+        url = f"{self.base_url}/orgs/{owner}"
+        try:
+            response = self.session.get(url)
+            # 200 = organization exists, 404 = not an organization (user account)
+            return response.status_code == 200
+        except Exception as e:
+            logger.warning(f"Failed to check if {owner} is organization: {e}")
+            return False
 
     def get_branch_protection(
         self,