Make cve_id member of BackportData optional

In case TriageAgent is not triaging CVE, it does not make
sense to require cve_id.

Resolves: packit/jotnar#237

Author: TomasKorbar

agents/backport_agent.py

@@ -220,7 +220,7 @@ async def main() -> None:
 
     class State(PackageUpdateState):
         upstream_fix: str
-        cve_id: str
+        cve_id: str | None
         unpacked_sources: Path | None = Field(default=None)
         backport_log: list[str] = Field(default=[])
         backport_result: BackportOutputSchema | None = Field(default=None)
@@ -473,7 +473,7 @@ async def comment_in_jira(state):
             dist_git_branch=branch,
             upstream_fix=upstream_fix,
             jira_issue=jira_issue,
-            cve_id=os.getenv("CVE_ID", ""),
+            cve_id=os.getenv("CVE_ID", None),
             redis_conn=None,
         )
         logger.info(f"Direct run completed: {state.backport_result.model_dump_json(indent=4)}")

common/models.py

@@ -94,7 +94,7 @@ class BackportInputSchema(BaseModel):
     package: str = Field(description="Package to update")
     dist_git_branch: str = Field(description="Git branch in dist-git to be updated")
     jira_issue: str = Field(description="Jira issue to reference as resolved")
-    cve_id: str = Field(default="", description="CVE ID if the jira issue is a CVE")
+    cve_id: str | None = Field(default=None, description="CVE ID if the jira issue is a CVE")
     build_error: str | None = Field(description="Error encountered during package build")
 
 
@@ -133,7 +133,7 @@ class BackportData(BaseModel):
     patch_url: str = Field(description="URL to the source of the fix that was validated using PatchValidator tool")
     justification: str = Field(description="Clear explanation of why this patch fixes the issue, linking it to the root cause")
     jira_issue: str = Field(description="Jira issue identifier")
-    cve_id: str = Field(description="CVE identifier")
+    cve_id: str | None = Field(description="CVE identifier", default=None)
     fix_version: str | None = Field(description="Fix version in Jira (e.g., 'rhel-9.8')", default=None)