Driver: Add page about Julia

[amotl]

About

What the title says.

Preview

https://cratedb-guide--417.org.readthedocs.build/connect/julia/

[coderabbitai]

Walkthrough

Adds a Julia driver card to the "Drivers by language" grid and introduces a new docs/connect/julia.md guide showing how to connect to CrateDB from Julia using LibPQ with example code and usage guidance.

Changes

Cohort / File(s)	Summary
Drivers index — add Julia card docs/connect/index.md	Inserted a new grid-item-card for Julia in the "Drivers by language" grid (logo image, connect-julia link/ref, alt text, padding/centering and styling classes) alongside existing language cards.
Julia documentation page docs/connect/julia.md	New documentation describing LibPQ (and Tables) installation, connection example to CrateDB, sample query execution and result iteration, Docker/Cloud notes, and links to LibPQ resources.

Sequence Diagram(s)

Changes are documentation/UI additions only; no control-flow or runtime behavior changes, so sequence diagrams are omitted.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

• Connect: Improve index page #231 — Touches the same docs/connect/index.md driver cards and layout; likely to conflict or overlap with the card grid changes.
• ETL/CDC: Guidance, Layout / Dissolve walls of links #239 — Modifies styling/includes in docs/connect/index.md affecting driver cards; relevant to the Julia card's classes and presentation.
• Connect: Reorganize and clean up section #361 — Reorganizes Connect drivers pages and entries; closely related to adding a new language card and doc.

Suggested reviewers

• kneth
• surister
• bmunkholm

Poem

🐰 I hopped to the docs with a joyful jig,
A Julia card now sits where the others live.
LibPQ sipped from a CrateDB cup,
Queries hop out — then I clean up! 🥕✨

Pre-merge checks and finishing touches

❌ Failed checks (1 inconclusive)

Check name	Status	Explanation	Resolution
Description Check	❓ Inconclusive	The pull request description provided is "What the title says" followed by a preview link. While this does reference the PR title ("Driver: Add page about Julia") and provides a preview URL, the description itself is extremely vague and doesn't independently convey meaningful information about the changeset. The description relies entirely on external context (the PR title and preview link) rather than describing what changes are being made. The phrase "What the title says" is a non-descriptive term that requires readers to look elsewhere to understand the actual changes.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Title Check	✅ Passed	The PR title "Driver: Add page about Julia" directly and accurately describes the main changes in the pull request. The raw summary confirms that the changeset adds a new Julia driver documentation page (docs/connect/julia.md) along with a corresponding card in the driver grid (docs/connect/index.md). The title is concise, clear, and specific enough for a developer scanning the repository history to understand that this PR introduces Julia driver documentation to the CrateDB guide.
Docstring Coverage	✅ Passed	No functions found in the changes. Docstring coverage check skipped.

✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch julia

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