… sso

Add RetentionDays validator to the validate package and remove the
duplicate inline validRetentionDays map from organization.go. Also
add Password validator and corresponding tests in preparation for
deduplicating the three password validation blocks in auth.go.

Replace the three duplicate password length checks in auth.go
(Register, ResetPassword, UpdateUser) with validate.Password calls,
and replace the inline validRetentionDays map with validate.RetentionDays.

…ON errors

Creates web/src/types/video.ts with canonical Video, VideoTag, Folder, and
Tag interfaces. Removes duplicate inline declarations from VideoDetail.tsx and
Library.tsx. VideoDetail-only fields (document, documentStatus,
transcriptionLanguage, noiseReduction, playlists) are marked optional so
Library can safely use the same type without carrying unused fields.

…rd to shared utils

Creates web/src/utils/format.ts with formatDuration, formatDate, formatChartDate,
and expiryLabel, and web/src/utils/clipboard.ts with copyToClipboard. Removes all
inline duplicate definitions from VideoDetail.tsx, Library.tsx, PlaylistDetail.tsx,
Playlists.tsx, Analytics.tsx, Recorder.tsx, and CameraRecorder.tsx, replacing them
with imports from the new shared modules.

…ecorder

Extract SharingSection, TranscriptSection, and CommentsSection from
the 2088-line VideoDetail.tsx into a VideoDetail/ directory with an
index.tsx orchestrator and three focused sub-components.

Break up the 1923-line Settings.tsx into Settings/ directory with
index.tsx orchestrator plus 7 section components and shared types.

Break up the 1237-line OrgSettings.tsx into OrgSettings/ directory
with index.tsx orchestrator plus 4 section components and shared types.

…ormatDuration

Remove 5 identical time-formatting functions from TrimModal,
FillerRemovalModal, SilenceRemovalModal, CommentsSection, and
TranscriptSection — all replaced with existing formatDuration from
utils/format.ts.

Split the 1124-line handler.go into handler.go (shared utilities,
identity/SCIM management), handler_oidc.go (OIDC flows), and
handler_saml.go (SAML flows).

…nents

Analytics.tsx (920 lines) → Analytics/ with 8 files.
PlaylistDetail.tsx (960 lines) → PlaylistDetail/ with 3 files.
Library.tsx (893 lines) → Library/ with 3 files.