Improve shared bill loading and draft state handling

[Aarekaz]

Summary

• extract shared bill query helpers and make shared reloads depend on actual bill id changes
• clear shared bill params when starting a new draft and return readable backend proxy failures
• add explicit shared vs draft bill source modes, fork shared bills into local copies on edit, and keep shared views out of draft persistence
• show shared bill mode in the header and expand regression coverage around shared bill transitions

Testing

• pnpm test --runInBand
• pnpm typecheck
• pnpm build

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
split-simple	Ready	Preview, Comment	May 29, 2026 6:08am

[github-actions]

Coverage after merging feat/shared-bill-state-model into main will be

21.81%

Coverage Report

File	Stmts	Branches	Funcs	Lines	Uncovered Lines
app
layout.tsx	0%	0%	0%	0%	1, 1, 10–19, 2, 20–29, 3, 30–39, 4, 40–49, 5, 50–59, 6, 60–69, 7, 70–79, 8, 80–87, 9
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[github-actions]

Coverage after merging feat/shared-bill-state-model into main will be

21.81%

Coverage Report

File	Stmts	Branches	Funcs	Lines	Uncovered Lines
app
layout.tsx	0%	0%	0%	0%	1, 1, 10–19, 2, 20–29, 3, 30–39, 4, 40–49, 5, 50–59, 6, 60–69, 7, 70–79, 8, 80–87, 9
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app/api/admin/bills
route.ts	0%	0%	0%	0%	1, 1–9
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app/api/admin/export
route.ts	0%	0%	0%	0%	1, 1–9
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app/api/admin/logout
route.ts	0%	0%	0%	0%	1, 1, 10–19, 2–9
app/api/bills/[id]
route.ts	100%	100%	100%	100%
app/api/receipt/scan
route.ts	0%	0%	0%	0%	1, 1, 10, 100–109, 11, 110–119, 12, 120–129, 13, 130–139, 14, 140–149, 15, 150–159, 16, 160–169, 17, 170–179, 18, 180–189, 19, 190–199, 2, 20, 200–209, 21, 210–219, 22, 220, 23–29, 3, 30–39, 4, 40–49, 5, 50–59, 6, 60–69, 7, 70–79, 8, 80–89, 9, 90–99
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cloudflare/src
bill-store.ts	0%	0%	0%	0%	1, 1, 10, 100–109, 11, 110–119, 12, 120–129, 13, 130–139, 14, 140–149, 15, 150–159, 16, 160–169, 17, 170–179, 18, 180–189, 19, 190–199, 2, 20, 200–209, 21, 210–219, 22, 220–229, 23, 230–236, 24–29, 3, 30–39, 4, 40–49, 5, 50–59, 6, 60–69, 7, 70–79, 8, 80–89, 9, 90–99
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[github-actions]

Coverage after merging feat/shared-bill-state-model into main will be

22.09%

Coverage Report

File	Stmts	Branches	Funcs	Lines	Uncovered Lines
app
layout.tsx	0%	0%	0%	0%	1, 1, 10–19, 2, 20–29, 3, 30–39, 4, 40–49, 5, 50–59, 6, 60–69, 7, 70–79, 8, 80–87, 9
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app/api/admin/bills
route.ts	0%	0%	0%	0%	1, 1–9
app/api/admin/bills/[id]
route.ts	0%	0%	0%	0%	1, 1, 10–19, 2, 20–29, 3, 30–39, 4, 40, 5–9
app/api/admin/export
route.ts	0%	0%	0%	0%	1, 1–9
app/api/admin/login
route.ts	0%	0%	0%	0%	1, 1, 10–19, 2, 20–29, 3, 30–39, 4–9
app/api/admin/logout
route.ts	0%	0%	0%	0%	1, 1, 10–19, 2–9
app/api/bills/[id]
route.ts	100%	100%	100%	100%
app/api/receipt/scan
route.ts	0%	0%	0%	0%	1, 1, 10, 100–109, 11, 110–119, 12, 120–129, 13, 130–139, 14, 140–149, 15, 150–159, 16, 160–169, 17, 170–179, 18, 180–189, 19, 190–199, 2, 20, 200–209, 21, 210–219, 22, 220, 23–29, 3, 30–39, 4, 40–49, 5, 50–59, 6, 60–69, 7, 70–79, 8, 80–89, 9, 90–99
app/b/[billId]
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app/og-image
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cloudflare/src
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worker.ts	0%	0%	0%	0%	1, 1, 10, 100–109, 11, 110–119, 12, 120–129, 13, 130–139, 14, 140–149, 15, 150–159, 16, 160–169, 17, 170–179, 18, 180–189, 19, 190–199, 2, 20, 200–209, 21, 210–219, 22, 220–229, 23, 230–239, 24, 240–249, 25, 250–259, 26, 260–269, 27, 270–279, 28, 280–289, 29, 290–299, 3, 30, 300–309, 31, 310–319, 32, 320–329, 33, 330–339, 34, 340–349, 35, 350–359, 36, 360–369,

[github-actions]

Coverage after merging feat/shared-bill-state-model into main will be

22.09%

Coverage Report

File	Stmts	Branches	Funcs	Lines	Uncovered Lines
app
layout.tsx	0%	0%	0%	0%	1, 1, 10–19, 2, 20–29, 3, 30–39, 4, 40–49, 5, 50–59, 6, 60–69, 7, 70–79, 8, 80–87, 9
page.tsx	0%	0%	0%	0%	1, 1, 10–19, 2, 20–29, 3, 30–39, 4, 40–49, 5, 50–51, 6–9
app/admin
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app/api/admin/bills
route.ts	0%	0%	0%	0%	1, 1–9
app/api/admin/bills/[id]
route.ts	0%	0%	0%	0%	1, 1, 10–19, 2, 20–29, 3, 30–39, 4, 40, 5–9
app/api/admin/export
route.ts	0%	0%	0%	0%	1, 1–9
app/api/admin/login
route.ts	0%	0%	0%	0%	1, 1, 10–19, 2, 20–29, 3, 30–39, 4–9
app/api/admin/logout
route.ts	0%	0%	0%	0%	1, 1, 10–19, 2–9
app/api/bills/[id]
route.ts	100%	100%	100%	100%
app/api/receipt/scan
route.ts	0%	0%	0%	0%	1, 1, 10, 100–109, 11, 110–119, 12, 120–129, 13, 130–139, 14, 140–149, 15, 150–159, 16, 160–169, 17, 170–179, 18, 180–189, 19, 190–199, 2, 20, 200–209, 21, 210–219, 22, 220, 23–29, 3, 30–39, 4, 40–49, 5, 50–59, 6, 60–69, 7, 70–79, 8, 80–89, 9, 90–99
app/b/[billId]
page.tsx	0%	0%	0%	0%	1, 1, 10, 2–9
app/og-image
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cloudflare/src
bill-store.ts	0%	0%	0%	0%	1, 1, 10, 100–109, 11, 110–119, 12, 120–129, 13, 130–139, 14, 140–149, 15, 150–159, 16, 160–169, 17, 170–179, 18, 180–189, 19, 190–199, 2, 20, 200–209, 21, 210–219, 22, 220–229, 23, 230–236, 24–29, 3, 30–39, 4, 40–49, 5, 50–59, 6, 60–69, 7, 70–79, 8, 80–89, 9, 90–99
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