feat: enable Across and deBridge swappers

[stuuagentclaw]

Description

Enable Across Protocol and deBridge DLN as active swap routes by setting their feature flags to true.

Both swappers are fully implemented and have been in the codebase for weeks:

• Across Protocol (AcrossSwapper): Integrated in earlier PRs, chain wiring expanded in feat: wire across to scroll and megaeth #12144. Supports 20+ chains with fast fill times.
• deBridge DLN (DebridgeSwapper): Integrated in feat: integrate sei evm chain and debridge swapper (cross-chain + same-chain) #11941, expanded to 9 additional chains in feat: wire debridge to 9 additional evm chains #12143. Solver-based cross-chain bridge + same-chain DEX aggregation.

Impact

Enabling these swappers adds 2 new route providers to ShapeShift's quote comparison engine, competing alongside Relay, THORChain, Chainflip, and other active swappers for best execution.

Key chains that gain additional routes:

• MegaETH: Relay (active) + Across (81 routes) + deBridge
• Berachain: Relay (active) + deBridge
• Scroll, Linea, Sonic, Mantle, Cronos: gain Across and/or deBridge routes
• Existing chains (ETH, ARB, OP, Base, etc.): more route competition = better prices

Across supported chains (verified via API)

Ethereum, Optimism, BNB, Polygon, Arbitrum, zkSync, Linea, Base, Scroll, Blast, Mode, Ink, Unichain, Worldchain, Monad, MegaETH, HyperEVM, Plasma, Soneium + more

deBridge supported chains (verified via API)

Ethereum, Optimism, BNB, Polygon, Arbitrum, Avalanche, Base, Linea, Sonic, Story, Flow EVM, MegaETH, Berachain, Mantle, Cronos, BOB, Gnosis, SEI + more

Risk

Medium - Enables two new swap routes globally. Both have been in the codebase behind flags and tested via their respective integration PRs. No new contracts or on-chain interaction changes.

Affected: All swap quotes will now include Across and deBridge routes when available for the selected pair. Users may see more route options.

Testing

Engineering

• Verify type-check and lint pass
• Verify Across quotes return for ETH → ARB swap
• Verify deBridge quotes return for ETH → BSC swap
• Verify both appear in quote comparison alongside Relay/THORChain

Operations

• Verify Across route appears in swap UI for supported chains
• Verify deBridge route appears in swap UI for supported chains
• Verify swap execution works end-to-end for at least one Across route
• Verify swap execution works end-to-end for at least one deBridge route
• Verify quote comparison shows multiple routes when available

Summary by CodeRabbit

• New Features

  • Enabled Across Swap and deBridge Swap features for users.

• Chores

  • Removed the explicit development-only feature flags for Across Swap and deBridge Swap.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: a759710e-a371-4c78-a86e-28477faee635

📥 Commits

Reviewing files that changed from the base of the PR and between ebca0a6 and 7ee3a7f.

📒 Files selected for processing (2)

• .env
• .env.development

💤 Files with no reviewable changes (1)

• .env.development

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📝 Walkthrough

Walkthrough

Two Vite feature flags were toggled: in .env VITE_FEATURE_ACROSS_SWAP and VITE_FEATURE_DEBRIDGE_SWAP were changed from false to true; in .env.development those two variables were removed.

Changes

Cohort / File(s)	Summary
Production env ./.env	Enabled two feature flags by changing VITE_FEATURE_ACROSS_SWAP and VITE_FEATURE_DEBRIDGE_SWAP from false → true.
Development env ./.env.development	Removed VITE_FEATURE_ACROSS_SWAP=true and VITE_FEATURE_DEBRIDGE_SWAP=true entries from the development env file.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Poem

🐰 I hopped through lines both short and few,
I flipped two flags from false to true.
In dev I tidied what’s not to show,
In prod they gleam — off we go! 🚀

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The PR title accurately describes the main change: enabling two swap route providers (Across and deBridge) by setting their feature flags to true in configuration files.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against the current code and only fix it if needed.

Inline comments:
In @.env:
- Line 367: Remove the redundant mode-specific environment variable entries for
VITE_FEATURE_ACROSS_SWAP and VITE_FEATURE_DEBRIDGE_SWAP: since these flags are
already defined globally (VITE_FEATURE_ACROSS_SWAP and
VITE_FEATURE_DEBRIDGE_SWAP present in the main .env), open the environment files
for specific modes and delete any lines that set VITE_FEATURE_ACROSS_SWAP or
VITE_FEATURE_DEBRIDGE_SWAP so the global values are authoritative and no
mode-specific overrides remain.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 1fa77b38-5809-4043-949d-ba32dfb247b1

📥 Commits

Reviewing files that changed from the base of the PR and between 7b7725d and ebca0a6.

📒 Files selected for processing (1)

• .env

[kaladinlight]