modifiers are gone — use `preventDefault` from `$lib/utils/event-util` (`onsubmit={preventDefault(fn)}`).
- **Forms:** use the custom `createForm(schema, initial)` from `$lib/utils/form-util.ts` with
`form-input.svelte`. The vendored shadcn formsnap/superforms wrappers exist but app forms don't
use them — match the surrounding file. Import zod as `import { z } from 'zod/v4'`.
## Coding Style Guidelines
### Comments
- Exactly one sentence per line
- There is NO maximum line width: never wrap a single sentence across multiple comment lines, no matter how long that sentence is
- A new line in a comment means a new sentence; a wrapped line does not exist
- No trailing period on single-line comments
- Prefer comments that explain intent, invariants, or why a branch exists
- Avoid comments that simply restate the next line of code
- For multi-step logic, use short section comments to separate the steps and explain why each step exists
- Inside a function, put a one-sentence comment above each major action; the comments double as visual separators between sections and should say what the step does and why, not how
- Favor a few well-placed section comments over a wall of code; a reader should be able to skim the comments and understand the method's flow
```go
// Wrong — one sentence wrapped across multiple lines
// This function performs the main validation logic. It checks
// the input against the schema and returns an error if the
// input is invalid.
// Wrong — trailing period on single-line comment
// Validate the input.
// Right — one sentence per line, each line as long as it needs to be
// This function performs the main validation logic
// It checks the input against the schema and returns an error if the input is invalid
// Right
// Validate the input
// Right
// Normalize the request host so callers can pass either Host or X-Forwarded-Host values
// Right
// Browsers do not accept a cookie Domain attribute set to an IP address
// Returning an empty domain tells the caller to set a host-only cookie instead
// Wrong — restates the code
// Trim whitespace and lowercase the host
host = strings.TrimSpace(strings.ToLower(host))
```
Section comments inside a function — one sentence per major action, describing what and why, acting as visual separators:
