Sync with main - minimal changes

Signed-off-by: Lukasz Gryglicki <[email protected]>

Assisted by [OpenAI](https://platform.openai.com/)

Assisted by [GitHub Copilot](https://github.com/features/copilot)

Author: lukaszgryglicki

COMMIT_AUTHORS_CACHING.md

@@ -0,0 +1,43 @@
+# EasyCLA: Author and Co-author Caching + Large-PR Support
+
+- **Two-level caching** for author and co-author identity & identity plus per-project signature decisions.
+- **GraphQL-based commit ingestion** that comfortably handles PRs with **250+ commits (and beyond)**.
+
+---
+
+## Why it matters
+- Faster PR checks and `/easycla` re-runs.
+- Lower DB/API load via memoized decisions.
+- Stable, deterministic output and accurate status posting on the PR **head SHA**.
+
+---
+
+## Caching 
+- **General cache key**: `(author_id, lower(login), lower(email)) → (user | None)`
+- **Per-project cache key**: `(project_id, author_id, lower(login), lower(email)) → (user | None, authorized, affiliated)`
+- **TTL policy**: positives **~24h**; negative/uncertain states use **Quick TTL = 5m**.
+- **Flow**: per-project cache → general cache → cold DB path. Results are stored back with the appropriate TTL.
+- Thread-safe with periodic expired entries cleanup (once per hour).
+
+---
+
+## Large PR (250+) support
+- Switch to **GitHub GraphQL** for commits (`pageSize=100`) with cursor paging.
+- Parallel processing via thread pool; co-authors parsed from **commit messages** (`Co-authored-by:`).
+- Final actor lists are **de-duplicated** and **sorted** (login, name, email, sha) for stable comments.
+- PR comments are **edited only when normalized body changes** (prevents churn & size bloat).
+- Commit statuses are always posted to the **true PR head SHA**.
+
+---
+
+## Operational notes
+- Expect noticeable **latency reduction** on large PRs and repeated checks.
+- Fallbacks remain safe; unknown users land in an “Unknown” bucket with guidance.
+- No behavior change to the core signing rules—only faster execution.
+
+---
+
+## Quick constants
+- `QUICK_CACHE_TTL = 300` seconds (negative/uncertain states).
+- Default positive cache TTL ≈ **24 hours**.
+- GraphQL: `pageSize=100`, parallel workers tuned for throughput.

cla-backend-go/github/github_repository.go

@@ -1776,7 +1776,7 @@ func getCommentBadge(allSigned bool, signURL string, missingUserId, managerAppro
 		badgeURL = fmt.Sprintf("%s/cla-signed.svg%s", CLALogoURL, svgVersion)
 		badgeHyperLink = fmt.Sprintf("%s/#/?version=2", CLALandingPage)
 		alt = "CLA Signed"
-		return fmt.Sprintf(`<a href="%s"><img src="%s" alt="%s" align="left" height="28" width="328" >`, badgeHyperLink, badgeURL, alt)
+		return fmt.Sprintf(`<a href="%s"><img src="%s" alt="%s" align="left" height="28" width="328" ></a>`, badgeHyperLink, badgeURL, alt)
 	}
 	badgeHyperLink = signURL
 	if missingUserId {
@@ -1790,7 +1790,7 @@ func getCommentBadge(allSigned bool, signURL string, missingUserId, managerAppro
 		alt = "CLA Not Signed"
 	}
 
-	text = fmt.Sprintf(`<a href="%s"><img src="%s" alt="%s" align="left" height="28" width="328" >`, badgeHyperLink, badgeURL, alt)
+	text = fmt.Sprintf(`<a href="%s"><img src="%s" alt="%s" align="left" height="28" width="328" ></a>`, badgeHyperLink, badgeURL, alt)
 	return fmt.Sprintf("%s<br/>", text)
 }
 

cla-backend/cla/models/github_models.py

@@ -2067,6 +2067,8 @@ def pygithub_graphql(g, query: str, variables: dict | None = None):
     Works on older PyGithub versions lacking Github.graphql().
     """
     try:
+        # LG: note that this uses internal PyGithub API - may break in future versions:
+        # g._Github__requester.requestJsonAndCheck
         headers, data = g._Github__requester.requestJsonAndCheck(
             "POST",
             "/graphql",