Add share-by-URL for search parameters

[grantfox-oss]

Summary

There is currently no way to share a specific search with someone. This issue encodes the current search inputs (source, destination, amount, direction, and network) as URL query parameters so a user can copy the URL from their browser and share it. Opening the URL pre-fills the form and runs the search automatically.

Task

• On search submission, push the search parameters to the URL using useRouter and useSearchParams from next/navigation.
• On page load, read any present query parameters and use them to pre-populate the form state and trigger a search.
• Handle malformed or partial query parameters gracefully by falling back to defaults.
• Do not push a new history entry on polling re-fetches, only on user-initiated searches.

Acceptance Criteria

• After a search, the URL contains query parameters representing the current inputs.
• Pasting the URL into a new tab pre-fills the form and runs the search automatically.
• Malformed query parameters do not crash the app.
• The browser back button navigates to the previous search state, not a blank form.

Files in Scope

• src/app/page.tsx
• src/components/path-form.tsx
• src/hooks/use-paths.ts

Complexity

• Low

[Idrhas]

Hi, I'd like to work on this issue, I have experience with the relevant technologies and ecosystem and have previously contributed to similar issues. I’m comfortable working with the codebase and familiar with standard practices.

[Senorespecial]

I would love to work on this issue

[manasehstephen131-ops]

hello maintainer please i would like to work on this issue i am a motivated developer with experience working on code issues, debugging, and contributing to projects. I work with JavaScript and Next.js, among other tools, and I’m comfortable understanding existing codebases and implementing solutions efficiently.

I am proactive, quick to learn, and committed to delivering quality work while continuously improving my skills.

[grantfox-oss]

🦊 GrantFox — @Idrhas has been assigned to this issue as part of the Official Campaign campaign!

Next steps:

1. Open a Pull Request referencing this issue (e.g., Closes #6)
2. Your PR will be reviewed by the ShippedLabs maintainers

Good luck! Track your progress on GrantFox.