fix: increase page card overflow padding

[Chefski]

Summary

• increase vertical overflow padding around page browser rail cards
• preserve the latest local UI adjustment before promoting dev to main

Validation

• git diff --check
• SwiftLint strict mode: 0 violations

Xcode builds and tests were not run locally, per repository instructions.

[greptile-apps]

Greptile Summary

This PR bumps railCardVerticalOverflowPadding in PageBrowserMetrics from 12 to 24 points, doubling the vertical overflow padding around page browser rail cards before dev is promoted to main.

• The change is confined to a single constant in the shared metrics enum; no view logic, data flow, or business logic is affected.
• SwiftLint strict mode reports 0 violations, consistent with the project's pre-commit requirement in AGENTS.md.

Confidence Score: 5/5

Safe to merge — the change is a single numeric constant update with no logic, data, or API surface affected.

Doubling a padding constant in a dedicated metrics enum is low-risk. The value is used purely for visual layout, the rest of the enum is untouched, and SwiftLint reports zero violations.

No files require special attention.

Important Files Changed

Filename	Overview
docmostly/Features/PageTree/PageBrowserMetrics.swift	Single constant updated: railCardVerticalOverflowPadding 12 → 24; no logic changes, no style-guide violations.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A["PageBrowserMetrics\nrailCardVerticalOverflowPadding = 24"] --> B["Rail card layout\n(SwiftUI view)"]
    B --> C["Vertical overflow space\nabove and below each card"]

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%%{init: {'theme': 'base', 'themeVariables': {"darkMode": true, "background": "#0d1117", "primaryColor": "#21262d", "primaryTextColor": "#e6edf3", "primaryBorderColor": "#8b949e", "lineColor": "#8b949e", "textColor": "#e6edf3", "edgeLabelBackground": "#161b22", "actorBkg": "#21262d", "actorBorder": "#8b949e", "actorTextColor": "#e6edf3", "actorLineColor": "#8b949e", "signalColor": "#8b949e", "signalTextColor": "#e6edf3", "noteBkgColor": "#373320", "noteBorderColor": "#d4a72c", "noteTextColor": "#f0e6c0", "labelBoxBkgColor": "#21262d", "labelBoxBorderColor": "#8b949e", "labelTextColor": "#e6edf3", "loopTextColor": "#e6edf3", "activationBkgColor": "#30363d", "activationBorderColor": "#8b949e"}}}%%
flowchart TD
    A["PageBrowserMetrics\nrailCardVerticalOverflowPadding = 24"] --> B["Rail card layout\n(SwiftUI view)"]
    B --> C["Vertical overflow space\nabove and below each card"]

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_{Reviews (1): Last reviewed commit: "fix: increase page card overflow padding" | Re-trigger Greptile}