docs(openspec): add FN-007 Git Connection Model change

- Add proposal, design, specs, and tasks for git connection model
- Include provider adapter, credential storage, SSH key lifecycle specs
- Add repository connection API and git operations specifications
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2026-05-16 13:43:49 +02:00
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## ADDED Requirements
### Requirement: Credentials are stored encrypted
The system SHALL store access tokens and SSH keys encrypted at rest.
#### Scenario: Store access token
- **WHEN** a user saves an access token
- **THEN** the system encrypts it with Fernet
- **AND** stores the encrypted value in the database
#### Scenario: Retrieve access token
- **WHEN** the system retrieves a credential for API calls
- **THEN** it decrypts the value
- **AND** returns the plaintext token
#### Scenario: List credentials without exposing values
- **WHEN** a user lists their credentials
- **THEN** the system returns metadata (name, provider, created_at)
- **AND** masks the token value (showing only last 4 characters)
### Requirement: Credential storage supports multiple providers
The system SHALL support storing credentials for different Git providers.
#### Scenario: Store GitHub token
- **WHEN** a user adds a GitHub personal access token
- **THEN** the system stores it with provider_type="github"
#### Scenario: Store GitLab token
- **WHEN** a user adds a GitLab personal access token
- **THEN** the system stores it with provider_type="gitlab"
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## ADDED Requirements
### Requirement: Git clone uses SSH credentials
The system SHALL clone repositories using SSH keys.
#### Scenario: Clone repository
- **WHEN** the system clones a repository
- **THEN** it writes the SSH private key to a temporary file
- **AND** sets GIT_SSH_COMMAND to use the key
- **AND** executes git clone
- **AND** cleans up the temporary key file
#### Scenario: Clone fails with invalid key
- **WHEN** a clone operation fails due to authentication
- **THEN** the system returns a clear error message
- **AND** suggests checking deploy key permissions
### Requirement: Git fetch and push use credentials
The system SHALL support fetch and push operations with SSH credentials.
#### Scenario: Fetch updates
- **WHEN** the system fetches from a remote
- **THEN** it uses the stored SSH key for authentication
- **AND** returns the fetch result
#### Scenario: Push changes
- **WHEN** the system pushes to a remote
- **THEN** it uses the stored SSH key for authentication
- **AND** returns the push result
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## ADDED Requirements
### Requirement: GitHub adapter implements provider interface
The system SHALL provide a GitHub adapter that implements the GitProvider interface.
#### Scenario: List repositories
- **WHEN** the adapter lists repositories for an authenticated user
- **THEN** it returns a list of repository objects with name, url, and default_branch
#### Scenario: Create deploy key
- **WHEN** the adapter creates a deploy key for a repository
- **THEN** it registers the SSH public key with GitHub
- **AND** returns the key ID
#### Scenario: Validate connection
- **WHEN** the adapter validates a token
- **THEN** it verifies the token with GitHub API
- **AND** returns user information
### Requirement: GitLab adapter implements provider interface
The system SHALL provide a GitLab adapter that implements the GitProvider interface.
#### Scenario: List repositories
- **WHEN** the adapter lists repositories for an authenticated user
- **THEN** it returns a list of repository objects with name, url, and default_branch
#### Scenario: Create deploy key
- **WHEN** the adapter creates a deploy key for a repository
- **THEN** it registers the SSH public key with GitLab
- **AND** returns the key ID
#### Scenario: Validate connection
- **WHEN** the adapter validates a token
- **THEN** it verifies the token with GitLab API
- **AND** returns user information
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## ADDED Requirements
### Requirement: Repository connections can be created
The system SHALL allow users to create connections to Git repositories.
#### Scenario: Connect GitHub repository
- **WHEN** a user provides a GitHub repository URL and access token
- **THEN** the system validates the URL and token
- **AND** creates a RepositoryConnection record
- **AND** generates an SSH key pair
- **AND** registers the deploy key with GitHub
#### Scenario: Connect GitLab repository
- **WHEN** a user provides a GitLab repository URL and access token
- **THEN** the system validates the URL and token
- **AND** creates a RepositoryConnection record
- **AND** generates an SSH key pair
- **AND** registers the deploy key with GitLab
#### Scenario: Reject invalid URL
- **WHEN** a user provides an invalid repository URL
- **THEN** the system returns a 400 error with validation message
### Requirement: Repository connections can be listed and retrieved
The system SHALL allow users to list and view their repository connections.
#### Scenario: List connections
- **WHEN** a user requests their repository connections
- **THEN** the system returns a list with status and metadata
#### Scenario: Get connection details
- **WHEN** a user requests a specific connection
- **THEN** the system returns full details including SSH public key
### Requirement: Repository connections can be deleted
The system SHALL allow users to delete repository connections.
#### Scenario: Delete connection
- **WHEN** a user deletes a connection
- **THEN** the system removes the deploy key from the provider
- **AND** deletes the SSH key pair
- **AND** marks the connection as deleted
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## ADDED Requirements
### Requirement: SSH keys are generated per repository
The system SHALL generate Ed25519 SSH key pairs for each repository connection.
#### Scenario: Generate key pair
- **WHEN** a repository connection is created
- **THEN** the system generates an Ed25519 key pair
- **AND** stores the private key encrypted
- **AND** returns the public key for deploy key registration
#### Scenario: Retrieve public key
- **WHEN** a user requests the public key for a connection
- **THEN** the system returns the SSH public key string
### Requirement: SSH keys support lifecycle operations
The system SHALL support rotating and revoking SSH keys.
#### Scenario: Rotate key
- **WHEN** a user rotates an SSH key
- **THEN** the system generates a new key pair
- **AND** updates the deploy key on the provider
- **AND** deletes the old key pair
#### Scenario: Revoke key
- **WHEN** a connection is deleted
- **THEN** the system deletes the deploy key from the provider
- **AND** securely deletes the local key pair