feat: add UTM-tagged docs links to SDK warnings and enterprise-only errors (#4797)

Add a central documentation link registry (`lancedb::docs::DocLink`) in
the Rust core that builds `docs.lancedb.com` URLs with UTM parameters
(`utm_source=lancedb_sdk`, `utm_medium=warning|error`,
`utm_campaign=<id>`, `utm_content=<sdk>-<version>`) placed before any
`#anchor` fragment and without user-identifying data.

- Initialize `utm_content` per language binding (`python`, `nodejs`,
`cli`, defaulting to `rust`) and expose the link builder to Python so
`DBConnection` and `Job` stubs reuse the core definitions.
- Append published documentation links to Enterprise-only `NotSupported`
/ `NotImplementedError` errors across database, job, catalog, and table
operations.
- Emit rate-limited maintenance warnings (once per table per process
when `warn` logging is enabled) when opening a native table with at
least 100 small fragments (`< 100k` physical rows each) or at least
1,000,000 unindexed rows on an optimizable user index, reading only
manifest metadata without opening data or `_indices/` files, and
document the thresholds in the compaction and reindexing guides.
- Verify published/in-repo `docs/web/` targets and `#anchor` fragments
in unit tests and include extracted SDK links in the scheduled
`docs-link-check` workflow.

Linear: OSS-2772

.github/workflows/ci-scripts.yml

@@ -9,6 +9,7 @@ on:
       - python/pyproject.toml
       - ci/check_cargo_lock.py
       - ci/check_sdist.py
+      - ci/extract_sdk_doc_links.py
       - ci/build_cli_linux.sh
       - ci/package_cli.py
       - .bumpversion.toml
@@ -22,6 +23,7 @@ on:
       - python/pyproject.toml
       - ci/check_cargo_lock.py
       - ci/check_sdist.py
+      - ci/extract_sdk_doc_links.py
       - ci/build_cli_linux.sh
       - ci/package_cli.py
       - .bumpversion.toml

.github/workflows/docs-link-check.yml

@@ -50,6 +50,10 @@ jobs:
           ref: ${{ github.event.repository.default_branch }}
           persist-credentials: false
 
+      - name: Extract SDK documentation links
+        run: |
+          python3 ci/extract_sdk_doc_links.py --output ./lychee-inputs/sdk-doc-links.md
+
       - name: Check links
         id: lychee
         continue-on-error: true
@@ -64,10 +68,12 @@ jobs:
           args: >-
             --scheme https
             --scheme http
+            --include-fragments
             --no-progress
             --max-retries 3
             --timeout 20
             'docs/src/**/*.md'
+            './lychee-inputs/sdk-doc-links.md'
           format: json
           output: ./lychee/out.json
           jobSummary: false