fix: restore test-used functions, silence tx.Rollback closed errors, prune knip dead code

Restore processImage (images.go) and nonDepositPaymentType (handlers.go) with //nolint:unused — used in test files.
Fix 97 tx.Rollback defers to silently discard expected "tx is closed" error after commit.
Frontend: remove 44 unused shadcn-svelte files, 2 dead components, 9 stale npm deps, prune unused exports.

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

node_modules/.svelte2tsx-language-server-files/svelte-native-jsx.d.ts

@@ -0,0 +1,32 @@
+declare namespace svelteNative.JSX {
+
+    // Every namespace eligible for use needs to implement the following two functions
+    function mapElementTag(
+        tag: string
+    ): any;
+
+    function createElement<Elements extends IntrinsicElements, Key extends keyof Elements>(
+        element: Key | undefined | null, attrs: Elements[Key]
+    ): any;
+    function createElement<Elements extends IntrinsicElements, Key extends keyof Elements, T>(
+        element: Key | undefined | null, attrEnhancers: T, attrs: Elements[Key] & T
+    ): any;
+
+
+    /* svelte specific */
+    interface ElementClass {
+        $$prop_def: any;
+    }
+
+    interface ElementAttributesProperty {
+        $$prop_def: any; // specify the property name to use
+    }
+
+    // Add empty IntrinsicAttributes to prevent fallback to the one in the JSX namespace
+    interface IntrinsicAttributes {
+    }
+
+    interface IntrinsicElements {
+        [name: string]: { [name: string]: any };
+    }
+}