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Feature plan: Step 1 · Step 2 · Step 3 · Step 4

Debug mode: enabled Effort study: railspike-effort / v3/qr_theme; standing P2 enrollment; ledger Extended estimates: enabled Cycle estimate: 0.30 Status: Step 1 approved; Option A; no implementation approval

Original Query

Let's work on this item from todo.txt, please:

QR codes should match theme within reason.

Problem

The invitation QR uses fixed black and white, which can look disconnected from the selected theme.

Estimate: 0.30

Use a theme-compatible dark foreground and light, opaque background for the QR, updating an existing code when the theme changes; retain black and white wherever a suitable pair cannot be established.

  • Benefit: The code itself fits palettes such as LCD green or dark blue without requiring an inverted code in dark themes.

  • Constraint: Preserve square modules, the clear margin and strong contrast; avoid textures, gradients and decorative reshaping inside the code.

  • Driver and uncertainty: Theme switching and phone/desktop decoding checks across all supported themes dominate verification; physical-camera readability needs separate acceptance evidence.

Option B — Theme the surrounding frame only

Estimate: 0.15

Keep the existing black-on-white QR and match only its surrounding border and spacing to the theme.

  • Benefit: Small presentation change that leaves encoded pixels unchanged.

  • Tradeoff: The white rectangle remains prominent, especially in dark themes, and only partially addresses the request.

  • Driver and uncertainty: Cross-theme layout review is the main work; visual improvement may be insufficient.

Recommendation and scope

Choose A: generate an invitation through the normal Invite page, display a theme-compatible QR, switch themes without changing its payload, and scan the same displayed link. Preserve the copyable link, generation-failure recovery and protection against stale QR/link pairs. Fall back to black and white when theme coloring is unsuitable. Verify rendered phone/desktop layouts, decoded payloads, live theme changes and recovery; record physical-device limits honestly. No new controls or explanatory copy are needed.

Dependency inventory: Zero proposed additions or updates; reuse the existing local encoder. No schema changes. Documentation scope includes this cycle's plans, debug log, plan index and study ledger. Leave todo.txt untouched. The earlier invite QR cycle is related prior work, whose outstanding acceptance is not closed by this assessment.

Study checkpoints and approval

Scope: v1/A; baseline 085c47701f57334164f7fe1c562454443cd65596; R1/P2; same stable ID across worktrees, no parent replacement. Intake: Pristine pre-inspection checkpoint missing; not reconstructed. Existing renderer, theme switching, styles and prior QR acceptance notes were inspected before scoring. Step 1 handoff: 2026-10-27 UTC; projected total 0.30 for A, including inspection, planning, implementation, verification, documentation and ordinary corrections. B/v1 total 0.15 is an alternative, not additive. All three frozen R1 hashes verified. Codex single exposed rater; no independent rating or measured work claimed. Maintainer fit and outcome acceptance pending. Approval: User supplied Approved Step 1 on 2026-10-27 UTC; Option A advances to Step 2. Planning remains uncommitted.

— Codex · 2026-10-27 UTC