feat: link PRs to issues directly (#3113)

* feat: link PRs to issues directly

Add the ability to link PRs to issues without going through workspace creation.

* address review feedback

Author: abcpro1

crates/api-types/src/pull_request.rs

@@ -23,12 +23,21 @@ pub struct PullRequest {
     pub merged_at: Option<DateTime<Utc>>,
     pub merge_commit_sha: Option<String>,
     pub target_branch_name: String,
+    pub project_id: Uuid,
+    #[deprecated(note = "use pull_request_issues join table instead")]
     pub issue_id: Uuid,
     pub workspace_id: Option<Uuid>,
     pub created_at: DateTime<Utc>,
     pub updated_at: DateTime<Utc>,
 }
 
+#[derive(Debug, Clone, Serialize, Deserialize, TS)]
+pub struct PullRequestIssue {
+    pub id: Uuid,
+    pub pull_request_id: Uuid,
+    pub issue_id: Uuid,
+}
+
 #[derive(Debug, Clone, Deserialize)]
 pub struct ListPullRequestsQuery {
     pub issue_id: Uuid,
@@ -38,3 +47,35 @@ pub struct ListPullRequestsQuery {
 pub struct ListPullRequestsResponse {
     pub pull_requests: Vec<PullRequest>,
 }
+
+#[derive(Debug, Clone, Serialize, Deserialize, TS)]
+pub struct ListPullRequestIssuesResponse {
+    pub pull_request_issues: Vec<PullRequestIssue>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, TS)]
+pub struct CreatePullRequestIssueRequest {
+    /// Optional client-generated ID. If not provided, server generates one.
+    /// Using client-generated IDs enables stable optimistic updates.
+    #[ts(optional)]
+    pub id: Option<Uuid>,
+    pub issue_id: Uuid,
+    pub url: String,
+    pub number: i32,
+    pub status: PullRequestStatus,
+    pub merged_at: Option<DateTime<Utc>>,
+    pub merge_commit_sha: Option<String>,
+    pub target_branch_name: String,
+}
+
+/// Request to update a PR status on the remote server.
+#[derive(Debug, Deserialize, Serialize)]
+pub struct UpdatePullRequestApiRequest {
+    pub url: String,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub status: Option<PullRequestStatus>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub merged_at: Option<Option<DateTime<Utc>>>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub merge_commit_sha: Option<Option<String>>,
+}