# 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.|