fix: Add architectural lint rules with agent-friendly error messages (#232)

- landing/eslint.config.js: ban imports from web-app paths (rule 1),
  direct RPC clients from viem/@wagmi/vue (rule 2), and axios (rule 4)
- web-app/eslint.config.js: ban string interpolation inside GraphQL
  query/mutation property values (rule 3); fixes 4 pre-existing violations
  in usePositionDashboard, usePositions, useSnatchNotifications,
  useWalletDashboard by migrating to variables: {} pattern
- services/ponder/eslint.config.js: ban findMany() calls that lack a
  limit parameter to prevent unbounded indexed-data growth (rule 5)

All error messages follow the [what is wrong][rule][how to fix][where to
read more] template so agents and humans fix on the first try.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

services/ponder/eslint.config.js

@@ -72,5 +72,18 @@ export default [
       'max-statements': 'off',
     },
   },
+  {
+    name: 'arch/ponder-bounded-queries',
+    rules: {
+      'no-restricted-syntax': [
+        'error',
+        {
+          selector: "CallExpression[callee.property.name='findMany']:not(:has(Property[key.name='limit']))",
+          message:
+            "Ponder findMany() called without a limit parameter. Unbounded queries will grow without limit as the chain is indexed — never use findMany() without a limit. Always specify `limit` in the options object. Use the ring buffer pattern from docs/ARCHITECTURE.md.",
+        },
+      ],
+    },
+  },
   eslintConfigPrettier,
 ];