Add wallet context to auth guard and store nonce in sessions

[Copilot]

Auth guard now provides wallet context to authenticated endpoints, eliminating redundant wallet lookups. Device sessions now capture the full authentication tuple (device, wallet, nonce, signature) for complete audit trails.

Changes

Enhanced VerifiedAuth

pub struct VerifiedAuth {
    pub device: DeviceRow,
    pub address: String,
    pub wallet_id: i32,           // Direct DB reference
    pub wallet_identifier: String, // e.g., "multicoin_0x123..."
}

Added nonce to devices_sessions

• Migration adds nonce VARCHAR(256) NOT NULL
• Complete authentication record: device + wallet + nonce + signature + timestamp

Eliminated redundant operations

• Rewards endpoints previously recreated WalletId::Multicoin(address).id() and re-fetched wallet
• Now use auth.wallet_id and auth.wallet_identifier directly
• One wallet operation at auth time, reused everywhere

Code organization

• Moved primitives::WalletType and primitives::WalletSource to top-level imports
• Removed inline primitives:: qualifiers throughout

Example

Before:

pub async fn create_referral(request: Authenticated<ReferralCode>, ...) {
    let wallet_identifier = WalletId::Multicoin(request.auth.address.clone()).id();
    client.create_username(&wallet_identifier, ...)
}

After:

pub async fn create_referral(request: Authenticated<ReferralCode>, ...) {
    client.create_username(&request.auth.wallet_identifier, ...)
}

Original prompt

can you add devices_sessions table that will contain signsture, device id when it's used to login, see rewards logic that has a auth guard, it should contain logic there

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[semanticdiff-com]

Review changes with  

Changed Files

File	Status
apps/api/src/referral/client.rs	65% smaller
apps/api/src/referral/mod.rs	43% smaller
apps/api/src/auth/guard.rs	10% smaller
crates/storage/src/database/devices_sessions.rs	0% smaller
crates/storage/src/database/mod.rs	0% smaller
crates/storage/src/migrations/2026-01-28-052000_devices_sessions/down.sql	Unsupported file format
crates/storage/src/migrations/2026-01-28-052000_devices_sessions/up.sql	Unsupported file format
crates/storage/src/models/device_session.rs	0% smaller
crates/storage/src/models/mod.rs	0% smaller
crates/storage/src/schema.rs	0% smaller