Migrated CommentFormBase component from Block/Elem to cn() helper.
- Replaced Block/Elem imports with cn import
- Replaced <Block name="comment-form" tag="form"> with <form className={cn("comment-form")...}>
- Replaced <Elem tag="div" name="primary-action"> with <div className={cn("comment-form").elem("primary-action")...}>
- Preserved ref, mod, onSubmit handler, and all props
- Added type assertion for form ref
- No behavior change, equivalent class strings

Migrated CommentFormButtons component from Block/Elem to cn() helper.
- Replaced Block/Elem imports with cn import
- Replaced <Block name="comment-form-buttons"> with <div className={cn("comment-form-buttons")...}>
- Replaced <Elem name="buttons"> with <div className={cn("comment-form-buttons").elem("buttons")...}>
- Replaced <Elem name="action" tag="button"> (2x) with <button type="button" className={...}>
- Both action buttons share same elem name (intentional, generates same class)
- Preserved onClick handler, tooltip, and all props
- No behavior change, equivalent class strings

Migrated LinkState component from Block/Elem to cn() helper.
- Replaced Block/Elem imports with cn import
- Replaced <Block name="link-state"> with <div className={cn("link-state")...}>
- Replaced <Block name="link-state-region"> with <div className={cn("link-state-region")...}>
- Replaced <Elem tag="div" name="prefix"> with <div className={cn("link-state").elem("prefix")...}>
- Replaced all Elems in link-state-region (icon, index, title, label, text, close)
- Nested Elems (label, text within title) all use link-state-region as block
- Preserved style with CSS custom properties (added type assertion)
- Preserved mouse handlers and all props
- No behavior change, equivalent class strings

Migrated CommentsList component from Block to cn() helper.
- Replaced Block import with cn import
- Replaced <Block name="comments-list"> with <div className={cn("comments-list")...}>
- No Elems in this file (simple wrapper)
- No behavior change, equivalent class strings

Migrated Comment/CommentForm component from Block/Elem to cn() helper.
- Replaced Block/Elem imports with cn import
- Replaced <Block name="comment-form-new" tag="form"> with <form className={cn("comment-form-new")...}>
- Replaced <Elem name="text-row"> with <div className={cn("comment-form-new").elem("text-row")...}>
- Replaced <Elem name="classifications-row"> with <div className={cn("comment-form-new").elem("classifications-row")...}>
- Replaced <Elem name="category-selector"> with <div className={cn("comment-form-new").elem("category-selector")...}>
- Replaced <Elem name="link-state"> with <div className={cn("comment-form-new").elem("link-state")...}>
- Replaced <Elem name="tooltipMessage"> with <div className={cn("comment-form-new").elem("tooltipMessage")...}>
- Preserved form ref, mods, onSubmit handler, and all props
- Added type assertion for form ref
- No behavior change, equivalent class strings

Migrated Comment/CommentItem component from Block/Elem to cn() helper.
- Replaced Block/Elem imports with cn import
- Replaced <Block name="comment-item"> with <div className={cn("comment-item")...}>
- Replaced <Elem tag={Userpic}> with <Userpic className={cn("comment-item").elem("userpic")...}>
- Replaced <Elem tag="span" name="name"> with <span className={cn("comment-item").elem("name")...}>
- Replaced <Elem component={IconCheck}> with <IconCheck className={cn("comment-item").elem("resolved")...}>
- Replaced all nested Elems (saving, dot, content, text, confirmForm, question, controls, actions, etc.)
- TimeTracker inner component uses parent block "comment-item"
- Nested Elems within content→text→confirmForm all use same block name
- Preserved ref, mods, handlers, and all props
- Added type assertion for ref
- No behavior change, equivalent class strings

Migrated Comments wrapper component from Block to cn() helper.
- Replaced Block import with cn import
- Replaced <Block name="comments"> with <div className={cn("comments")...}>
- No Elems in this file (simple wrapper)
- Wraps either Comment/ or OldComment/ system based on FF_PER_FIELD_COMMENTS flag
- No behavior change, equivalent class strings