feat: Add optional RC branch support

plugins/titan-plugin-git/titan_plugin_git/clients/git_client.py

@@ -51,7 +51,8 @@ def __init__(
         self,
         repo_path: str = ".",
         main_branch: str = "main",
-        default_remote: str = "origin"
+        default_remote: str = "origin",
+        rc_branch: str | None = None,
     ):
         """
         Initialize Git client.
@@ -64,6 +65,7 @@ def __init__(
         self.repo_path = repo_path
         self.main_branch = main_branch
         self.default_remote = default_remote
+        self.rc_branch = rc_branch
 
         # Initialize network layer
         self.network = GitNetwork(repo_path=repo_path)

plugins/titan-plugin-git/titan_plugin_git/plugin.py

@@ -49,7 +49,8 @@ def initialize(self, config: TitanConfig, secrets: SecretManager) -> None:
         # Initialize client with validated configuration
         self._client = GitClient(
             main_branch=validated_config.main_branch,
-            default_remote=validated_config.default_remote
+            default_remote=validated_config.default_remote,
+            rc_branch=validated_config.rc_branch,
         )
 
     def _get_plugin_config(self, config: TitanConfig) -> dict:

plugins/titan-plugin-github/tests/unit/test_pull_request_steps.py

@@ -8,6 +8,7 @@
     merge_pull_request_step,
     verify_pull_request_state_step,
 )
+from titan_plugin_github.steps.create_pr_step import create_pr_step
 
 
 class MockTextual:
@@ -18,6 +19,7 @@ def __init__(self):
         self.success_text = Mock()
         self.warning_text = Mock()
         self.dim_text = Mock()
+        self.text = Mock()
 
     def loading(self, _message):
         class _Loader:
@@ -147,3 +149,26 @@ def test_verify_pull_request_state_step_requires_expected_state():
     assert isinstance(result, Error)
     assert result.message == "No expected PR state in context"
     ctx.textual.end_step.assert_called_once_with("error")
+
+
+def test_create_pr_step_uses_context_base_branch():
+    github = Mock()
+    github.config.auto_assign_prs = False
+    github.create_pull_request.return_value = ClientSuccess(
+        data=Mock(number=4105, url="https://github.example/pr/4105"),
+        message="ok",
+    )
+    ctx = make_context(
+        github,
+        pr_title="notes: Add release notes for 26.18",
+        pr_body="Release notes",
+        pr_head_branch="notes/release-notes",
+        pr_base_branch="rc/26.18",
+    )
+    ctx.git = Mock(main_branch="develop")
+
+    result = create_pr_step(ctx)
+
+    assert isinstance(result, Success)
+    github.create_pull_request.assert_called_once()
+    assert github.create_pull_request.call_args.kwargs["base"] == "rc/26.18"

plugins/titan-plugin-github/titan_plugin_github/steps/create_pr_step.py

@@ -52,7 +52,7 @@ def create_pr_step(ctx: WorkflowContext) -> WorkflowResult:
     # 2. Get required data from context and client config
     title = ctx.get("pr_title")
     body = ctx.get("pr_body")
-    base = ctx.git.main_branch  # Get base branch from git client config
+    base = ctx.get("pr_base_branch") or ctx.git.main_branch
     head = ctx.get("pr_head_branch")
     is_draft = ctx.get("pr_is_draft", False)  # Default to not a draft
 

titan_cli/core/plugins/models.py

@@ -41,6 +41,7 @@ class GitPluginConfig(BaseModel):
     """Configuration for Git plugin."""
     main_branch: str = Field("main", description="Main/default branch name")
     default_remote: str = Field("origin", description="Default remote name")
+    rc_branch: str | None = Field(None, description="Prefix for versioned RC branches (for example, 'rc')")
 
 class GitHubPluginConfig(BaseModel):
     """Configuration for GitHub plugin."""
@@ -121,3 +122,33 @@ def validate_email(cls, v):
         if '@' not in v:
             raise ValueError("email must be a valid email address")
         return v.lower()  # Normalize email to lowercase
+
+
+class TekelPluginConfig(BaseModel):
+    """Configuration for Tekel plugin."""
+    base_url: Optional[str] = Field(
+        None,
+        description="Tekel API base URL (e.g. 'https://tekel-api.example.com')",
+        json_schema_extra={"config_scope": "global"},
+    )
+    api_token: Optional[str] = Field(
+        None,
+        description="Tekel API token",
+        json_schema_extra={"format": "password", "required_in_schema": True},
+    )
+    timeout: int = Field(
+        30,
+        description="Request timeout in seconds",
+        json_schema_extra={"config_scope": "global"},
+    )
+
+    @field_validator('base_url')
+    @classmethod
+    def validate_base_url(cls, v):
+        if not v:
+            raise ValueError(
+                "Tekel base_url not configured. Add [plugins.tekel.config] with base_url in ~/.titan/config.toml"
+            )
+        if not v.startswith(('http://', 'https://')):
+            raise ValueError("base_url must start with http:// or https://")
+        return v.rstrip('/')