[dont merge yet, for discussion] d/acc Coalition Builder — Map, Coalesce, Fund

[owocki]

Summary

Adds a new d/acc Coalition Builder experiment at /experiments/dacc-coalition-builder — an interactive
tool for mapping the d/acc problem space, signaling interest in domains, and staking ETH to fund
coalitions. The goal is to create a relextive flywheel around Mapping, Coalescing, Funding.

Also introduces an /experiments listing page and reorganizes the header nav into a "Discover" dropdown.

Test url: https://stage.gitcoin.co/experiments/dacc-coalition-builder

What's included

Smart Contract (contracts/src/DaccCoalitionStaking.sol)

• Solidity contract deployed to both Sepolia and Ethereum mainnet at
  0xd69B924c37489bc83AbEE1167f8d84916Ab2c6BB
• Stake ETH toward any domain ID, withdraw anytime before operator deploys
• Operator can withdraw pooled funds to a destination wallet once a domain reaches 1 ETH threshold
• Events for staking, withdrawal, and operator deployment

4-Level Zoom Interface (CoalitionsClient.tsx)

• 1x (zoomed out): Select your flavor of d/acc — Defensive, Decentralized, Democratic, Differential
• 2x: Fund one of 4 quadrants (Physical Defense, Physical Coordination, Digital Defense, Digital
  Coordination)
• 3x: Fund one of 19 specific domains (Biodefense, ZK Systems, Democratic Funding, etc.)
• 4x (zoomed in): Fund individual projects within each domain
• Staking works at every zoom level with tiered amounts (0.001 → 1 ETH)
• URL state sync — zoom, quadrant filter, sort, and search are all shareable via URL params

Positions & Wallet Integration (wagmi v2)

• "Your Positions" section reads all staking positions from the contract across all zoom levels
• Withdraw with loading indicator and block explorer link
• Pending transaction cards with explorer links
• Disconnect wallet button
• Staging/mainnet chain switching via NEXT_PUBLIC_STAGING env var

Activity Feed & Social Layer

• PostgreSQL-backed (Supabase) persistence for interest signals, stakes, query log, and activity feed
• "Your Activity" section (filtered by connected wallet) + "All Activity" (always visible)
• Lazy "Load more" pagination (25 at a time)
• ENS name resolution for addresses
• Clickable addresses → block explorer, clickable domains → navigate to that domain
• Trending section powered by query log

Analytics Dashboard (/experiments/dacc-coalition-builder/analytics)

• Admin view with detailed analytics

Navigation & Brand

• New /experiments listing page for experimental tools
• Header reorganized: flat nav links consolidated into "Discover" dropdown
• On-brand visual effects: teal glow blooms, gradient section dividers, card hover shadows,
  backdrop-blur zoom bar

New files

• contracts/src/DaccCoalitionStaking.sol — staking contract
• src/lib/staking-contract.ts — contract address, ABI, chain config
• src/lib/coalitions-data.ts — 19 domains, 4 quadrants, d/acc taxonomy
• src/lib/coalitions-db.ts — PostgreSQL persistence layer
• src/app/api/coalitions/route.ts — REST API for social/engagement data
• src/app/experiments/dacc-coalition-builder/ — page, client, layout, wallet provider, domain map
• src/app/experiments/page.tsx — experiments listing

Environment

Requires DATABASE_URL pointing to a PostgreSQL instance (Supabase). Tables auto-create on first
request.

Test plan

• Visit /experiments — listing page renders with Coalition Builder card
• Visit /experiments/dacc-coalition-builder — page loads with Chladni header
• Toggle zoom levels 1x→4x — appropriate cards render at each level
• Filter by quadrant and sort by raised/interest/alpha at zoom 3x/4x
• Search for a project at zoom 4x
• Share a URL with ?zoom=4&q=gitcoin — recipient sees the same view
• Connect wallet, stake at each zoom level — tx confirms onchain
• Verify pending tx card appears with block explorer link
• Verify position appears in "Your Positions" after confirmation
• Withdraw a position — loading state, explorer link, position disappears
• Disconnect wallet — positions section shows connect prompt
• Activity feed shows stakes/interest, "Load more" fetches next page
• ENS names resolve for known addresses in activity feed

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Project	Deployment	Actions	Updated (UTC)
gitcoin-co-30	Ready	Preview, Comment	Mar 7, 2026 4:08pm