docs: add Cloud DWH adapters, fix icons, rebrand Vertica to OpenText

[devin-ai-integration]

Summary

Adds "Coming soon" placeholder pages for 5 new data warehouse adapters to the Cloud docs, mirroring the adapters recently added to OSS docs in PR #2136:

• DuckDB
• Spark
• Fabric
• SQL Server
• Vertica

Each page follows the same structure as the existing Trino "Coming soon" page — a Card linking to the Tally interest form. Adapter cards with SVG icons were added to connect-dwh-cards.mdx, and navigation entries were added to docs.json.

Dremio was excluded since it already exists in Cloud docs.

Updates since last revision

• Fixed Hex BI card icon in bi-cards.mdx — replaced the Cloudinary-hosted <img> tag with an inline SVG. Mintlify treats <img> tags inside the icon prop as full-width content (with an expand button), not as icons — this was the root cause of the persistent misalignment. The new SVG uses the actual HEX block-letter paths sourced from hex.tech, rendered as pink (#E8A0B8) text on a dark (#2D2B3D) rounded-rect background, sized to 35×35 to match other cards.

• Added Trino card with logo to connect-dwh-cards.mdx — the Trino page already existed but was missing from the integrations card grid. SVG icon (bunny mascot) sourced from the OSS adapters-cards.mdx, sized to 35×35.

• Replaced Trino page icon — the Trino "Coming soon" page (trino.mdx) previously displayed a text-based "COMING SOON" SVG. It now uses the same bunny mascot SVG as the card, sized to 40×40.

• Rebranded Vertica to OpenText icon — replaced the old Vertica chevron logo with the OpenText icon mark (blue gradient square with "ot" symbol, extracted from opentext.com) in three locations:

  • Cloud card (connect-dwh-cards.mdx)
  • Cloud page (vertica.mdx)
  • OSS card (adapters-cards.mdx)

  Each instance uses a unique gradient ID (vertica_cloud_ot_gradient, vertica_page_ot_gradient, vertica_oss_ot_gradient) to avoid SVG ID collisions.

Review & Testing Checklist for Human

• Verify Hex card icon looks correct — the SVG was manually constructed from path data on hex.tech. The pink block-letter "HEX" on dark background should visually match the Hex brand. Check that it is properly aligned and sized consistently with adjacent BI cards (Tableau, Looker, Power BI, Sigma, ThoughtSpot) in the deploy preview. The colors (#2D2B3D background, #E8A0B8 letters) and the scale/position transform may need tweaking.
• Verify OpenText icon is the correct logo — the SVG was extracted from the opentext.com website header. It's the blue-gradient square icon mark with the "ot" symbol inside. Confirm this matches what was intended by "the one with the blue background" and renders properly at 35×35 on cards and 40×40 on the Vertica page.
• Verify Trino bunny mascot renders on card and page — the icon is a detailed multi-path SVG. Confirm it displays cleanly at both 35×35 (card) and 40×40 (page) and isn't clipped or distorted.
• Verify Vertica/OpenText logo renders in OSS docs — the OSS adapters-cards.mdx was also updated. Confirm the OpenText icon appears correctly on the OSS adapters page too.
• Spot-check all new DWH cards — open the integrations page in the deploy preview and confirm all cards (DuckDB, Spark, Fabric, SQL Server, Vertica, Trino) show correct icons and link to the correct Tally form URLs.

Notes

• SVGs for new adapter cards sourced from docs/snippets/oss/adapters-cards.mdx (added in PR docs: add DuckDB, Dremio, Spark, Fabric, SQL Server, and Vertica support to OSS documentation #2136)
• Hex SVG letter paths sourced from hex.tech website; background and text colors approximated from brand imagery
• OpenText icon SVG sourced from the opentext.com website header; uses a linearGradient fill (#00008B → #1A6AFF)
• Navigation ordering: new adapters are appended after Trino in docs.json
• The code-quality CI check failure is pre-existing and unrelated to this PR (typo in detection-and-coverage.mdx, mypy errors in Slack client, missing mintlify CLI in CI)

Link to Devin session: https://app.devin.ai/sessions/a52cd0139c5946069df765941a23a4b5
Requested by: @haritamar

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