feat(rapor): aylık değerlendirme raporu backend (şablon, yorumlar, öneriler)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

backend/Cargo.lock

@@ -1428,6 +1428,7 @@ dependencies = [
  "flate2",
  "http-body-util",
  "jsonwebtoken",
+ "minijinja",
  "mongodb",
  "quick-xml",
  "reqwest",
@@ -1589,6 +1590,15 @@ dependencies = [
  "unicase",
 ]
 
+[[package]]
+name = "minijinja"
+version = "3.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "509eeb2603a84eccabb4d75f6ec8ba23b46bbf441aaeb863d6b83a5887fd51e4"
+dependencies = [
+ "serde",
+]
+
 [[package]]
 name = "miniz_oxide"
 version = "0.9.1"