fix(a11y): accept autocomplete prop on NumberInput, ChipInput, and Combobox

[bilal-karim]

Summary

• Adds an autocomplete prop to NumberInput, ChipInput, and Combobox primitives, matching the existing pattern on Input
• All three previously hardcoded autocomplete="off", preventing consumers from passing WCAG-defined purpose tokens like cc-number, email, or country-name (SC 1.3.5 Identify Input Purpose)
• Default remains "off" — no existing consumer behavior changes
• Uses FullAutoFill type from svelte/elements for type safety, consistent with Input

Test plan

• Confirm existing consumers render identically (no behavior change with default "off")
• Verify a consumer can pass autocomplete="email" to ChipInput and the DOM attribute is present
• Verify a consumer can pass autocomplete="cc-number" to NumberInput and the DOM attribute is present
• Verify a consumer can pass autocomplete="country-name" to Combobox and the DOM attribute is present

🤖 Generated with Claude Code

A11y-Audit-Ref: 1.3.5-input-autocomplete-props-batch

[vercel]

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Project	Deployment	Actions	Updated (UTC)
holocene	Ready	Preview, Comment	May 21, 2026 7:55pm

[temporal-cicd]

Warnings

⚠️

📊 Strict Mode: 14 errors in 3 files (1.5% of 914 total) src/lib/holocene/combobox/combobox.svelte (10) L152:4: Type 'null' is not assignable to type 'string'. L155:4: Type 'null' is not assignable to type '"search" | "link" | "success" | "error" | "action" | "activity" | "add-square" | "add" | "apple" | "archives" | "arrow-down" | "arrow-left" | "arrow-up" | "arrow-right" | "ascending" | ... 140 more ... | "xmark-square"'. L157:4: Type 'null' is not assignable to type 'keyof T'. L241:4: 'inputElement' is possibly 'null'. L242:4: 'inputElement' is possibly 'null'. L248:14: Argument of type 'string | T | undefined' is not assignable to parameter of type 'string | T'. L253:14: Argument of type 'string | T | undefined' is not assignable to parameter of type 'string | T'. L297:60: Function lacks ending return statement and return type does not include 'undefined'. L390:10: Type 'HTMLLIElement | null' is not assignable to type 'HTMLLIElement'. L390:43: 'menuElement' is possibly 'null'. src/lib/holocene/input/number-input.svelte (3) L9:13: Type 'null' is not assignable to type '"search" | "link" | "success" | "error" | "action" | "activity" | "add-square" | "add" | "apple" | "archives" | "arrow-down" | "arrow-left" | "arrow-up" | "arrow-right" | "ascending" | ... 140 more ... | "xmark-square"'. L20:13: Type 'undefined' is not assignable to type 'number'. L21:13: Type 'undefined' is not assignable to type 'number'. src/lib/holocene/input/chip-input.svelte (1) L73:30: 'e.clipboardData' is possibly 'null'.

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