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ADR-008_mod_preset_persistence.md

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ADR-008_mod_preset_persistence.md

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ADR-008: Mod Preset Persistence

  • Status: Accepted
  • Context: Users repeatedly configure the same modset. The URL is the source of truth (ADR-002), but bare URLs have no mods.
  • Decision: localStorage stores a default mod preset under cbn-guide:mods. On bootstrap, bare URLs (no mods param) get the saved preset injected via replaceState. Applying mods in the ModSelector automatically saves them. Saving an empty modset clears the preset.
  • Consequences:
    • Positive: users configure once, bare URLs auto-load their preset.
    • Negative: localStorage adds a persistence dependency; clearing browser data loses the preset.
    • Neutral: shared URLs with explicit ?mods= are unaffected.
  • References: src/preferences.svelte.ts, src/navigation.svelte.ts, ADR-002.