feat: Document completed tasks for KMS, Cryptography, and Plugin Libraries

- Added detailed task completion records for KMS interface implementation and CLI support for file-based keys.
- Documented security enhancements including Argon2id password hashing, audit event contracts, and rate limiting configurations.
- Included scoped service support and integration updates for the Plugin platform, ensuring proper DI handling and testing coverage.

src/Concelier/__Libraries/StellaOps.Concelier.Connector.CertIn/TASKS.completed.md

@@ -0,0 +1,16 @@
+# Completed Tasks
+
+|Index/detail crawler with windowing|BE-Conn-CertIn|Source.Common|**DONE** – index/detail fetch implemented with window overlap and pagination.|
+
+|Extractor (title/CVEs/mitigation)|BE-Conn-CertIn|Source.Common|**DONE** – parser normalizes encodings, CVE lists, and mitigation text.|
+
+|DTO validation and sanitizer|BE-Conn-CertIn, QA|Source.Common|**DONE** – HTML sanitizer produces DTO before persistence.|
+
+|Canonical mapping (aliases, refs)|BE-Conn-CertIn|Models|**DONE** – mapper creates CERT-IN aliases plus typed references.|
+
+|State/dedupe and fixtures|BE-Conn-CertIn, QA|Storage.Mongo|**DONE** – snapshot/resume tests cover dedupe and cursor handling.|
+
+|Mark failure/backoff on fetch errors|BE-Conn-CertIn|Storage.Mongo|**DONE** – fetch pipeline marks failures/backoff with unit coverage.|
+
+|Conditional fetch caching|BE-Conn-CertIn|Source.Common|**DONE** – connector reuses ETag/Last-Modified; tests verify not-modified flow.|
+