chore: update GitHub trigger plugin version and remove deprecated issue comment events

- Bumped version from 1.3.0 to 1.3.1 in the manifest.
- Removed deprecated issue comment events: issue_comment_created, issue_comment_edited, issue_comment_deleted.
- Consolidated issue comment handling into a unified structure for better maintainability.
- Updated README to reflect changes in event handling and provide clearer setup instructions.

python/examples/github_trigger/events/commit_comment/commit_comment.py

@@ -0,0 +1,68 @@
+from __future__ import annotations
+
+from collections.abc import Mapping
+from typing import Any
+
+from werkzeug import Request
+
+from dify_plugin.entities.trigger import Variables
+from dify_plugin.errors.trigger import EventIgnoreError
+from dify_plugin.interfaces.trigger import Event
+
+
+class CommitCommentEvent(Event):
+    """Unified commit comment event (typically 'created')."""
+
+    def _on_event(self, request: Request, parameters: Mapping[str, Any]) -> Variables:
+        payload = request.get_json()
+        if not payload:
+            raise ValueError("No payload received")
+
+        allowed_actions = parameters.get("actions") or []
+        action = (payload.get("action") or "created").lower()
+        if allowed_actions and action not in allowed_actions:
+            raise EventIgnoreError()
+
+        comment = payload.get("comment")
+        if not isinstance(comment, Mapping):
+            raise ValueError("No comment in payload")
+
+        self._check_body_contains(comment, parameters.get("body_contains"))
+        self._check_commenter(comment, parameters.get("commenter"))
+        self._check_commit_id(payload, parameters.get("commit_id"))
+        self._check_path(comment, parameters.get("path"))
+
+        return Variables(variables={**payload})
+
+    def _check_body_contains(self, comment: Mapping[str, Any], value: str | None) -> None:
+        if not value:
+            return
+        keywords = {s.strip().lower() for s in str(value).split(",") if s.strip()}
+        body = (comment.get("body") or "").lower()
+        if keywords and not any(k in body for k in keywords):
+            raise EventIgnoreError()
+
+    def _check_commenter(self, comment: Mapping[str, Any], value: str | None) -> None:
+        if not value:
+            return
+        allowed = {s.strip() for s in str(value).split(",") if s.strip()}
+        login = (comment.get("user", {}) or {}).get("login")
+        if allowed and login not in allowed:
+            raise EventIgnoreError()
+
+    def _check_commit_id(self, payload: Mapping[str, Any], value: str | None) -> None:
+        if not value:
+            return
+        cid = (payload.get("comment") or {}).get("commit_id") or payload.get("commit_id")
+        targets = {s.strip() for s in str(value).split(",") if s.strip()}
+        if targets and (cid not in targets):
+            raise EventIgnoreError()
+
+    def _check_path(self, comment: Mapping[str, Any], value: str | None) -> None:
+        if not value:
+            return
+        path = (comment.get("path") or "").strip()
+        targets = {s.strip() for s in str(value).split(",") if s.strip()}
+        if targets and path not in targets:
+            raise EventIgnoreError()
+