(CODUX-113) Document and cover quicksprint ETA behavior

[numnx]

🧩 Task: Document and cover quicksprint ETA behavior

Automated task PR opened by Code UX for T04.

📋 Summary

Sprint: Sprint 179 · Quicksprint ETA · Task: T04

Upgrade the shared sprint and quicksprint ETA planning overlay into a polished seamless boat animation with an accessible coffee-cup easter egg, backed by focused dashboard tests and documentation.

🤖 Model & Provider

Provider	Codex CLI
Model	gpt-5.5

⏱️ Timing

Started	2026-07-07 13:02:36 UTC
Finished	2026-07-07 13:08:00 UTC
Duration	5m 24s

📊 Token Usage

Metric	Value
Input tokens	100,522
Cached input tokens	1,363,328
Output tokens	8,051
Total tokens	1,471,901
Invocations	1
Tool calls	38
Active time	4m 4s

Included usage estimate (subscription/local login): $1.43

✅ QA Review

⏳ QA review runs after this PR is opened. Check the task card in the dashboard for the outcome once it lands.

📝 Full Task Prompt

## Objective
Ensure the shared ETA overlay behavior is verified from the quicksprint path and documented in the dashboard docs users read.

## Scope
- Edit `tests/dashboard/v2/quicksprint-panel.test.tsx`
- Edit `docs/dashboard/dashboard-guide.md`
- Edit `docs/dashboard/design-system-sprints.md`
- Edit `docs-web/user/dashboard/sprints.md`
- Verify whether `docs-web/user/dashboard/sprints.md` is the public mirror for this behavior and keep it aligned with the canonical docs updates

## Implementation Requirements
1. Add a quicksprint regression test that selects a template, starts `Plan & Start` or `Plan Only`, sees the improved `Quicksprint in motion` overlay, activates the vessel easter egg, and verifies the coffee reminder appears.
2. In the same test coverage, confirm `New Quicksprint`, `Minimize`, and request cancellation behavior remain available or unchanged after the coffee state is activated.
3. Update `docs/dashboard/dashboard-guide.md` to describe the upgraded planning feedback overlay: ETA/Elapsed timers, seamless boat exit/respawn, shared sprint/quicksprint usage, and the coffee easter egg.
4. Update `docs/dashboard/design-system-sprints.md` with design guidance for the ETA visual, including reduced-motion and interaction accessibility expectations.
5. Update `docs-web/user/dashboard/sprints.md` to mirror the user-facing sprint/quicksprint planning behavior in concise language.

## Constraints
- Do not edit implementation files in this task unless a test exposes a small integration bug directly caused by T02/T03.
- Do not add a new documentation page; this is an update to existing sprint/dashboard documentation.
- Do not claim backend ETA behavior changed; only document the visual and interaction behavior.
- Keep docs outcome-focused and avoid raw implementation jargon.

## Verification
- Run `pnpm exec vitest run tests/dashboard/v2/quicksprint-panel.test.tsx`.
- Run `pnpm run test:dashboard -- tests/dashboard/v2/quicksprint-panel.test.tsx tests/dashboard/v2/ui-components.test.tsx tests/dashboard/v2/sprint-composer.test.tsx tests/dashboard/lib/sprint-planning-feedback.test.ts`.
- Success means the quicksprint path exercises the shared overlay and docs accurately describe the final behavior.

🌿 Branch Info

Base: feature/CODUX-179-quicksprint-eta
Head: task/feature-codux-179-quicksprint-eta-t04-codex-mrantaaa

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🤖 Generated by Code UX