fix: honor Hermes local command override (#3503)

## Summary

This fixes the Hermes local adapter so that a configured command
override is respected during both environment tests and execution.

## Problem

The Hermes adapter expects `adapterConfig.hermesCommand`, but the
generic local command path in the UI was storing
`adapterConfig.command`.

As a result, changing the command in the UI did not reliably affect
runtime behavior. In real use, the adapter could still fall back to the
default `hermes` binary.

This showed up clearly in setups where Hermes is launched through a
wrapper command rather than installed directly on the host.

## What changed

- switched the Hermes local UI adapter to the Hermes-specific config
builder
- updated the configuration form to read and write `hermesCommand` for
`hermes_local`
- preserved the override correctly in the test-environment path
- added server-side normalization from legacy `command` to
`hermesCommand`

## Compatibility

The server-side normalization keeps older saved agent configs working,
including configs that still store the value under `command`.

## Validation

Validated against a Docker-based Hermes workflow using a local wrapper
exposed through a symlinked command:

- `Command = hermes-docker`
- environment test respects the override
- runs no longer fall back to `hermes`

Typecheck also passed for both UI and server.

Co-authored-by: NoronhaH <NoronhaH@users.noreply.github.com>

ui/src/adapters/hermes-local/index.ts

@@ -1,12 +1,12 @@
 import type { UIAdapterModule } from "../types";
 import { parseHermesStdoutLine } from "hermes-paperclip-adapter/ui";
-import { SchemaConfigFields, buildSchemaAdapterConfig } from "../schema-config-fields";
 import { buildHermesConfig } from "hermes-paperclip-adapter/ui";
+import { SchemaConfigFields } from "../schema-config-fields";
 
 export const hermesLocalUIAdapter: UIAdapterModule = {
   type: "hermes_local",
   label: "Hermes Agent",
   parseStdoutLine: parseHermesStdoutLine,
   ConfigFields: SchemaConfigFields,
-  buildAdapterConfig: buildSchemaAdapterConfig,
+  buildAdapterConfig: buildHermesConfig,
 };