feat: render page table of contents beside documentation

[Copilot]

Documentation pages already expose sanitized heading TOC HTML, but the client discarded it. This renders that TOC beside wide-layout content and preserves heading hash navigation.

Rendering

• Add a semantic TOC pane to the docs template.
• Populate it from get_page().toc_html.

this.$toc.html(toc_html);
this.$toc_pane.toggleClass("hide", !toc_html);

Layout and navigation

• Show a sticky right-hand TOC at wide viewports; hide it below the wide breakpoint.
• Retain the original centered layout for pages without headings.
• Scroll to matching rendered headings when a page opens with a URL fragment.

Coverage

• Assert server TOC entries target generated heading IDs.
• Add browser coverage for TOC links and hash deep links.

• Fixes Render page table of contents on the right of the content #5

[barredterra]

@copilot resolve merge conflicts

[Copilot]

@copilot resolve merge conflicts

Resolved in merge commit 4746751, preserving both the TOC/deep-link behavior and the target branch’s localized-page fallback notice.

[greptile-apps]

Confidence Score: 5/5

The PR appears safe to merge.

No blocking failure remains.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A[Load documentation page] --> B[Render page content and TOC]
    B --> C[Start Mermaid rendering]
    C --> D[Store rendering promise as layout_ready]
    D --> E{URL has fragment?}
    E -- No --> F[Display page]
    E -- Yes --> G[Wait for layout_ready]
    G --> H{Still viewing same page?}
    H -- No --> F
    H -- Yes --> I[Decode heading ID]
    I --> J[Scroll rendered heading into view]
    K[Click TOC link] --> L[Replace URL fragment locally]
    L --> G

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_{Reviews (3): Last reviewed commit: "style: format with prettier" | Re-trigger Greptile}