feat: add AgriTrust favicon (SVG wheat mark) - web/favicon.svg: gree…

[ubongn]

…n wheat stalk on dark rounded square - Linked in all 4 pages (index, dashboard, farmer, lp) - Added /favicon.svg route in FastAPI for reliable serving

Description

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Smart contract change (requires redeployment)

Testing

• Local tests pass (cargo test)
• Frontend builds without errors
• Tested on Casper Testnet (if applicable)

Checklist

• My code follows the project's style guidelines
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings

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Project	Deployment	Actions	Updated (UTC)
agritrust-casper	Ready	Preview, Comment	Jul 20, 2026 11:02am