chore: revert repo references to Kaelio/ktx and remove rename-resilience (#252)

The GitHub repo was renamed back from Kaelio/ktx-ai-data-agents-context to Kaelio/ktx, reverting the URL changes from #250 across package metadata, CI (codecov + star-history slugs), issue/security templates, the release runbook, and docs/install commands.

Also removes the rename-resilience machinery #250 added: semantic-release now reads the repository URL straight from package.json (Kaelio/ktx) again, so the repositoryUrl() derivation in scripts/semantic-release-config.cjs, its tests, and the rename note in docs/release.md are no longer needed.

.github/workflows/ci.yml

@@ -212,7 +212,7 @@ jobs:
         uses: codecov/codecov-action@75cd11691c0faa626561e295848008c8a7dddffe # v5.5.4
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
-          slug: Kaelio/ktx-ai-data-agents-context
+          slug: Kaelio/ktx
           files: ./packages/cli/coverage/lcov.info
           flags: typescript
           name: typescript
@@ -231,7 +231,7 @@ jobs:
         uses: codecov/codecov-action@75cd11691c0faa626561e295848008c8a7dddffe # v5.5.4
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
-          slug: Kaelio/ktx-ai-data-agents-context
+          slug: Kaelio/ktx
           files: ./coverage/python.xml
           flags: python
           name: python

.github/workflows/star-history.yml

@@ -35,7 +35,7 @@ jobs:
           set -euo pipefail
           # cachebust forces star-history to regenerate instead of serving its
           # own server-side cache; --location follows the slug-normalizing 301.
-          url="https://api.star-history.com/svg?repos=Kaelio/ktx-ai-data-agents-context&type=Date&cachebust=${GITHUB_RUN_ID}-${GITHUB_RUN_ATTEMPT}"
+          url="https://api.star-history.com/svg?repos=Kaelio/ktx&type=Date&cachebust=${GITHUB_RUN_ID}-${GITHUB_RUN_ATTEMPT}"
           curl --fail --location --silent --show-error \
             --retry 3 --retry-delay 5 --max-time 60 \
             -o assets/star-history.svg.new "$url"