feat: added web redirect

[RohitKushvaha01]

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A[User taps Buy button] --> B{config.IAP_AVAILABLE?}
    B -- Yes --> C[Native IAP flow]
    B -- No --> D[Call auth.getLoggedInUser]
    D --> E{User logged in?}
    E -- No --> F[Open login page in browser]
    E -- Yes --> G[Open plugin purchase page in browser]
    F --> H[User completes login on web]
    G --> I[User completes purchase on web]

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[greptile-apps]

Greptile Summary

This PR adds a web redirect flow for purchasing paid plugins when Google Play IAP is unavailable (e.g., on F-Droid builds). Users are directed to the Acode website — first to log in if needed, then to the plugin page — instead of hitting a dead IAP path.

• plugin.view.js: Adds an openPluginWebsite async helper and a new Buttons branch that renders a browser-open button when !config.IAP_AVAILABLE && isPaid && !purchased && price, correctly placed before the existing IAP buy branch.
• extensions/index.js: Mirrors the same redirect logic in the sidebar install flow, and correctly gates on !remotePlugin.owned so users who already purchased are not sent back to the website.
• plugin.js: Adds an import auth from \"lib/auth\" that is unused within this file — auth is only consumed in plugin.view.js, which already has its own import.

Confidence Score: 5/5

Safe to merge — the redirect logic is well-gated in both the plugin detail page and the sidebar, and the previously flagged owned-plugin regression is correctly addressed.

The only new finding is a leftover import auth in plugin.js that is unreferenced in that file. All other changed logic is guarded correctly and consistent between the two entry points.

src/pages/plugin/plugin.js — unused auth import to clean up.

Important Files Changed

Filename	Overview
src/pages/plugin/plugin.js	Only change is an unused import auth from "lib/auth" — auth is never referenced in this file.
src/pages/plugin/plugin.view.js	Adds openPluginWebsite and a new IAP-unavailable buy button branch; logic and prop threading look correct.
src/sidebarApps/extensions/index.js	Mirrors the web-redirect logic with a correct !remotePlugin.owned guard before redirecting paid, non-IAP users.

_{Reviews (3): Last reviewed commit: "fix: check owned before launching webpag..." | Re-trigger Greptile}

[RohitKushvaha01]

@greptileai