feat(metadata,people): richer metadata editing + face-naming flow

Metadata (sidebar):
- New editable fields: Title, Credits section (Artist/Copyright/
  License via Details), GPS Altitude.
- Video facts in the File section: Duration, FPS, Codec — required
  fixing videoFile(): PhotoPrism serializes MediaType as the bare word
  "video", so the old startsWith('video/') check never matched and the
  helper always fell back to the JPEG poster.
- Timezone correctness: buildTakenAtPatch no longer forces
  TakenAtLocal=UTC; it preserves the photo's existing UTC↔local offset
  (per-photo in bulk edits) so PhotoPrism can't clobber manual date
  edits when recomputing from TimeZone, and Year/Month/Day now derive
  from local wall-clock time.

People (was "disabled" — really: zero subjects because naming is what
creates a person, and the UI had no naming flow; prod has 40k face
markers in 790 unnamed clusters):
- Sidecar GET /api/sidecar/subjects — scoped people list via one
  markers→files→photos SQL pass (labels pattern), replacing the
  client-side probe-per-subject N+1 filter.
- Sidecar GET /api/sidecar/faces/unnamed — the caller's unnamed face
  clusters with count, crop thumb, and a representative marker UID.
- "Name new faces" panel on /tags/people: face-crop cards with inline
  name input; naming uses PhotoPrism's own flow (PUT /markers/:uid
  {Name, SubjSrc:manual}, verified against PP source) which creates
  the Subject and propagates across the cluster.
- Scoped proxy: marker PUT / subject-clear DELETE now allowed with
  per-marker ownership checks (was blanket-forbidden, which would have
  blocked naming for scoped users).
- Per-photo People chips in the sidebar from named Files[].Markers,
  linking to the person's page.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

sidecar/handlers_people.go

@@ -0,0 +1,178 @@
+package main
+
+import (
+	"encoding/json"
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+	"gorm.io/gorm"
+)
+
+// People (subjects + unnamed face clusters), scoped to the caller's
+// BasePath the same way handleLabels scopes labels: proxy PhotoPrism's
+// list, then one SQL pass over the caller's slice of the library to
+// recompute counts and drop entries with nothing in scope.
+//
+// PhotoPrism CE treats subjects and face clusters as library-wide
+// metadata (like albums and labels) — scoping here controls what each
+// user *sees*, while the underlying entities stay shared.
+
+// PpSubjectLite mirrors the fields the web client consumes from
+// PhotoPrism's /api/v1/subjects rows.
+type PpSubjectLite struct {
+	UID        string `json:"UID"`
+	Type       string `json:"Type"`
+	Slug       string `json:"Slug"`
+	Name       string `json:"Name"`
+	Alias      string `json:"Alias"`
+	Favorite   bool   `json:"Favorite"`
+	Private    bool   `json:"Private"`
+	Excluded   bool   `json:"Excluded"`
+	Hidden     bool   `json:"Hidden"`
+	PhotoCount int    `json:"PhotoCount"`
+	FileCount  int    `json:"FileCount"`
+	Thumb      string `json:"Thumb"`
+}
+
+// handleSubjects proxies PhotoPrism's /api/v1/subjects and post-filters
+// per-subject photo counts to the caller's BasePath, dropping subjects
+// whose faces never appear in the caller's photos.
+//
+// Route: GET /api/sidecar/subjects  (behind requireSession)
+func handleSubjects(pp *ppClient, ppDb *gorm.DB) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		token := ctxToken(c)
+		basePath := ctxBasePath(c)
+
+		query := c.Request.URL.RawQuery
+		resp, err := pp.call(c.Request.Context(), http.MethodGet, "/api/v1/subjects?"+query, token, nil)
+		if err != nil || !resp.OK {
+			c.JSON(http.StatusBadGateway, gin.H{"error": "upstream subjects request failed"})
+			return
+		}
+		var subjects []PpSubjectLite
+		if err := json.Unmarshal(resp.Body, &subjects); err != nil {
+			c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to parse subjects"})
+			return
+		}
+
+		if basePath == "" || ppDb == nil {
+			c.JSON(http.StatusOK, subjects)
+			return
+		}
+
+		// One query: per-subject photo count + a representative face-crop
+		// thumb, restricted to the caller's path subtree. The join chain is
+		// markers → files → photos, matching how PhotoPrism binds a face to
+		// a picture.
+		type subjStat struct {
+			SubjUID string `gorm:"column:subj_uid"`
+			Cnt     int64  `gorm:"column:cnt"`
+			Thumb   string `gorm:"column:thumb"`
+		}
+		var stats []subjStat
+		if err := ppDb.Raw(`
+			SELECT m.subj_uid AS subj_uid,
+			       COUNT(DISTINCT p.id) AS cnt,
+			       SUBSTRING_INDEX(GROUP_CONCAT(m.thumb ORDER BY m.size DESC SEPARATOR 0x1f), 0x1f, 1) AS thumb
+			FROM   markers m
+			JOIN   files  f ON f.file_uid  = m.file_uid  AND f.file_missing = 0
+			JOIN   photos p ON p.photo_uid = f.photo_uid AND p.deleted_at IS NULL
+			WHERE  m.marker_type = 'face'
+			  AND  m.marker_invalid = 0
+			  AND  m.subj_uid IS NOT NULL AND m.subj_uid <> ''
+			  AND  (p.photo_path = ? OR p.photo_path LIKE ?)
+			GROUP  BY m.subj_uid
+		`, basePath, basePath+"/%").Scan(&stats).Error; err != nil {
+			c.JSON(http.StatusBadGateway, gin.H{"error": "subject stats query failed"})
+			return
+		}
+
+		cntMap := make(map[string]int64, len(stats))
+		thumbMap := make(map[string]string, len(stats))
+		for _, s := range stats {
+			cntMap[s.SubjUID] = s.Cnt
+			thumbMap[s.SubjUID] = s.Thumb
+		}
+
+		filtered := make([]PpSubjectLite, 0, len(stats))
+		for _, s := range subjects {
+			cnt, ok := cntMap[s.UID]
+			if !ok || cnt == 0 {
+				continue
+			}
+			s.PhotoCount = int(cnt)
+			if th := thumbMap[s.UID]; th != "" {
+				s.Thumb = th
+			}
+			filtered = append(filtered, s)
+		}
+		c.JSON(http.StatusOK, filtered)
+	}
+}
+
+// unnamedFaceCluster is one face cluster PhotoPrism has detected but
+// nobody has named yet. Naming happens the same way PhotoPrism's own
+// People→New tab does it: PUT /api/v1/markers/<markerUid> with
+// {Name, SubjSrc:"manual"} — PhotoPrism then creates the Subject and
+// propagates it across the cluster (verified against
+// internal/api/markers.go + frontend/src/model/face.js).
+type unnamedFaceCluster struct {
+	FaceID string `json:"faceId" gorm:"column:face_id"`
+	// Photos under the caller's scope carrying this face.
+	Count int64 `json:"count" gorm:"column:cnt"`
+	// Marker crop hash — renders via /api/v1/t/<thumb>/<token>/tile_320.
+	Thumb string `json:"thumb" gorm:"column:thumb"`
+	// Representative marker (largest face in scope) — the PUT target
+	// when the user names this cluster.
+	MarkerUID string `json:"markerUid" gorm:"column:marker_uid"`
+}
+
+// handleUnnamedFaces lists face clusters awaiting a name, scoped to the
+// caller's BasePath (admins with no BasePath see the whole library).
+// Ordered by in-scope photo count so the most prominent people surface
+// first.
+//
+// Route: GET /api/sidecar/faces/unnamed  (behind requireSession)
+func handleUnnamedFaces(ppDb *gorm.DB) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		if ppDb == nil {
+			c.JSON(http.StatusOK, gin.H{"clusters": []unnamedFaceCluster{}})
+			return
+		}
+		basePath := ctxBasePath(c)
+
+		where := ""
+		args := []any{}
+		if basePath != "" {
+			where = "AND (p.photo_path = ? OR p.photo_path LIKE ?)"
+			args = []any{basePath, basePath + "/%"}
+		}
+		var clusters []unnamedFaceCluster
+		if err := ppDb.Raw(`
+			SELECT m.face_id AS face_id,
+			       COUNT(DISTINCT p.id) AS cnt,
+			       SUBSTRING_INDEX(GROUP_CONCAT(m.thumb ORDER BY m.size DESC SEPARATOR 0x1f), 0x1f, 1) AS thumb,
+			       SUBSTRING_INDEX(GROUP_CONCAT(m.marker_uid ORDER BY m.size DESC SEPARATOR 0x1f), 0x1f, 1) AS marker_uid
+			FROM   markers m
+			JOIN   files  f  ON f.file_uid  = m.file_uid  AND f.file_missing = 0
+			JOIN   photos p  ON p.photo_uid = f.photo_uid AND p.deleted_at IS NULL
+			JOIN   faces  fc ON fc.id = m.face_id AND fc.face_hidden = 0
+			WHERE  m.marker_type = 'face'
+			  AND  m.marker_invalid = 0
+			  AND  (m.subj_uid IS NULL OR m.subj_uid = '')
+			  AND  m.face_id <> ''
+			  `+where+`
+			GROUP  BY m.face_id
+			ORDER  BY cnt DESC
+			LIMIT  60
+		`, args...).Scan(&clusters).Error; err != nil {
+			c.JSON(http.StatusBadGateway, gin.H{"error": "face cluster query failed"})
+			return
+		}
+		if clusters == nil {
+			clusters = []unnamedFaceCluster{}
+		}
+		c.JSON(http.StatusOK, gin.H{"clusters": clusters})
+	}
+}

sidecar/handlers_ppproxy.go

@@ -185,6 +185,27 @@ func proxyToken(r *http.Request) string {
 	return r.Header.Get("X-Session-ID")
 }
 
+// markerWithinBase reports whether a marker's underlying photo lives under
+// base. Fails closed: no DB handle or unknown marker → false.
+func markerWithinBase(ppDb *gorm.DB, markerUID, base string) bool {
+	if ppDb == nil || markerUID == "" {
+		return false
+	}
+	var n int64
+	err := ppDb.Table("markers m").
+		Joins("JOIN files f ON f.file_uid = m.file_uid").
+		Joins("JOIN photos p ON p.photo_uid = f.photo_uid").
+		Where("m.marker_uid = ?", markerUID).
+		Where("p.deleted_at IS NULL").
+		Where("p.photo_path = ? OR p.photo_path LIKE ?", base, base+"/%").
+		Count(&n).Error
+	if err != nil {
+		slog.Warn("pp-proxy: marker ownership query failed", "err", err)
+		return false
+	}
+	return n > 0
+}
+
 // batchUIDsWithinBase validates that every photo UID in a batch body lives
 // under base, using one SQL query against PhotoPrism's photos table. Fails
 // closed: no DB handle, unknown UIDs, or any path outside base → false.
@@ -344,13 +365,28 @@ func handlePPProxy(cfg *Config, ppDb *gorm.DB) gin.HandlerFunc {
 
 		// Albums (heaps), labels, subjects, faces: shared across users by
 		// design in CE — reads and mutations pass through; the photos inside
-		// any of them stay path-scoped by the rules above.
+		// any of them stay path-scoped by the rules above. Note that naming
+		// a face (marker PUT below) creates/updates a shared Subject the
+		// same way album/label edits are shared.
 		case rest == "albums" || strings.HasPrefix(rest, "albums/") ||
 			rest == "labels" || strings.HasPrefix(rest, "labels/") ||
 			rest == "subjects" || strings.HasPrefix(rest, "subjects/") ||
 			rest == "faces" || strings.HasPrefix(rest, "faces/"):
 			proxy.ServeHTTP(c.Writer, c.Request)
 
+		// Marker mutations (face naming / clearing): ownership-checked —
+		// the marker's file must belong to a photo under the caller's
+		// BasePath. This is how the web client names people (PhotoPrism's
+		// own naming flow is PUT /markers/:uid {Name, SubjSrc:"manual"}).
+		case (method == http.MethodPut && strings.HasPrefix(rest, "markers/") && strings.Count(rest, "/") == 1) ||
+			(method == http.MethodDelete && strings.HasPrefix(rest, "markers/") && strings.HasSuffix(rest, "/subject")):
+			markerUID := strings.TrimSuffix(strings.TrimPrefix(rest, "markers/"), "/subject")
+			if !markerWithinBase(ppDb, markerUID, base) {
+				c.AbortWithStatusJSON(http.StatusNotFound, gin.H{"error": "marker not found"})
+				return
+			}
+			proxy.ServeHTTP(c.Writer, c.Request)
+
 		default:
 			slog.Info("pp-proxy: blocked", "user", user.UserName, "method", method, "path", rest)
 			forbid(c)

sidecar/main.go

@@ -109,6 +109,8 @@ func main() {
 			auth.GET("/labels", handleLabels(pp, ppDb))
 			auth.GET("/counts", handleScopedCounts(ppDb))
 			auth.GET("/countries", handleCountries(ppDb))
+			auth.GET("/subjects", handleSubjects(pp, ppDb))
+			auth.GET("/faces/unnamed", handleUnnamedFaces(ppDb))
 		}
 
 		// User-scoped photos — post-filters by BasePath so review/archive

web/src/lib/components/people/NewFacesPanel.svelte

@@ -0,0 +1,112 @@
+<!--
+	"Name new faces" — the missing half of the People feature. PhotoPrism
+	only creates a person once someone names a detected face cluster, so a
+	library can have tens of thousands of face markers and still show an
+	empty People list. This panel surfaces the caller's unnamed clusters
+	(scoped server-side to their BasePath) as face-crop cards with an
+	inline name input; naming goes through PhotoPrism's own flow (PUT on
+	the cluster's representative marker), which creates the Subject and
+	propagates it across the cluster.
+-->
+<script lang="ts">
+	import { createQuery, useQueryClient } from '@tanstack/svelte-query';
+	import { toast } from 'svelte-sonner';
+	import {
+		listUnnamedFaces,
+		nameFaceCluster,
+		type UnnamedFaceCluster
+	} from '$lib/services/photoprism';
+	import { isAuthenticated, thumbUrl } from '$lib/stores/session.svelte';
+	import { InlineLoader } from '$lib/components/feedback';
+	import { UserPlus } from 'lucide-svelte';
+
+	const qc = useQueryClient();
+
+	const facesQuery = createQuery<UnnamedFaceCluster[]>(() => ({
+		queryKey: ['faces', 'unnamed'],
+		queryFn: listUnnamedFaces,
+		enabled: isAuthenticated(),
+		staleTime: 60_000
+	}));
+
+	let drafts = $state<Record<string, string>>({});
+	let busy = $state<Record<string, boolean>>({});
+
+	async function submit(cluster: UnnamedFaceCluster) {
+		const name = (drafts[cluster.faceId] ?? '').trim();
+		if (!name || busy[cluster.faceId]) return;
+		busy[cluster.faceId] = true;
+		try {
+			await nameFaceCluster(cluster.markerUid, name);
+			toast.success(`Named ${name}`, {
+				description:
+					'PhotoPrism links the whole cluster in the background — the photo count may keep growing.'
+			});
+			drafts[cluster.faceId] = '';
+			void qc.invalidateQueries({ queryKey: ['faces', 'unnamed'] });
+			void qc.invalidateQueries({ queryKey: ['subjects'] });
+		} catch (err) {
+			toast.error(err instanceof Error ? err.message : 'Naming failed');
+		} finally {
+			busy[cluster.faceId] = false;
+		}
+	}
+
+	const clusters = $derived(facesQuery.data ?? []);
+</script>
+
+{#if facesQuery.isPending}
+	<InlineLoader label="Looking for unnamed faces…" />
+{:else if clusters.length > 0}
+	<section class="space-y-3">
+		<header class="space-y-0.5">
+			<h2 class="flex items-center gap-1.5 text-sm font-medium text-foreground">
+				<UserPlus class="h-4 w-4" /> Name new faces
+			</h2>
+			<p class="text-[11px] text-muted-foreground">
+				Faces PhotoPrism detected but nobody has named yet. Naming one creates a person and tags
+				every matching photo.
+			</p>
+		</header>
+		<div
+			class="grid gap-3"
+			style="grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));"
+		>
+			{#each clusters as cluster (cluster.faceId)}
+				<div
+					class="flex flex-col items-center gap-2 rounded-md border border-border bg-card/30 p-3"
+				>
+					<div class="relative">
+						<img
+							src={thumbUrl(cluster.thumb, 'tile_224')}
+							alt="Unnamed face"
+							loading="lazy"
+							decoding="async"
+							class="h-20 w-20 rounded-full border border-border object-cover"
+						/>
+						<span
+							class="absolute -bottom-1 -right-1 rounded-full bg-secondary px-1.5 py-0.5 text-[10px] font-medium tabular-nums text-muted-foreground"
+							title={`${cluster.count} of your photos carry this face`}
+						>
+							{cluster.count}
+						</span>
+					</div>
+					<input
+						type="text"
+						placeholder="Name…"
+						disabled={busy[cluster.faceId]}
+						class="w-full rounded border border-input bg-background px-1.5 py-1 text-center text-xs shadow-sm focus:outline-none focus:ring-1 focus:ring-ring disabled:opacity-50"
+						bind:value={drafts[cluster.faceId]}
+						onkeydown={(e) => {
+							if (e.key === 'Enter') {
+								e.preventDefault();
+								void submit(cluster);
+							}
+						}}
+						onblur={() => void submit(cluster)}
+					/>
+				</div>
+			{/each}
+		</div>
+	</section>
+{/if}

web/src/lib/components/sidebar/BulkMetadataSidebar.svelte

@@ -82,11 +82,13 @@
 			() =>
 				patchTargets(
 					ids,
-					buildTakenAtPatch(iso),
+					// Per-photo patch so each photo keeps its own UTC↔local
+					// offset when the date is stamped across a selection.
+					(p) => buildTakenAtPatch(iso, p),
 					label,
 					(p) =>
 						p.TakenAt
-							? buildTakenAtPatch(p.TakenAt)
+							? buildTakenAtPatch(p.TakenAt, p)
 							: ({ TakenSrc: '' } as UpdatePhotoBody)
 				),
 			label

web/src/lib/components/sidebar/RightSidebar.svelte

@@ -25,6 +25,7 @@
 		Star,
 		Tag,
 		Timer,
+		User,
 		X
 	} from 'lucide-svelte';
 	import {
@@ -44,7 +45,13 @@
 	import { isAuthenticated } from '$lib/stores/session.svelte';
 	import { push as pushUndo } from '$lib/stores/undo.svelte';
 	import { getMetadataSectionOpen, setMetadataSection } from '$lib/stores/view.svelte';
-	import { photoNameAndDir, primaryFile, type PpPhoto } from '$lib/types/photoprism';
+	import {
+		isVideo,
+		photoNameAndDir,
+		primaryFile,
+		videoFile,
+		type PpPhoto
+	} from '$lib/types/photoprism';
 	import { navigateToFolder, navigateToTag, setSearch, setSection } from '$lib/stores/filters.svelte';
 	import { goto } from '$app/navigation';
 	import { COLOR_SWATCHES } from '$lib/utils/tagGroups';
@@ -59,14 +66,19 @@
 	const qc = useQueryClient();
 
 	let basename = $state('');
+	let title = $state('');
 	let caption = $state('');
 	let takenAt = $state('');
 	let lat = $state('');
 	let lng = $state('');
+	let altitude = $state('');
 	let country = $state('');
 	let keywords = $state<string[]>([]);
 	let keywordDraft = $state('');
 	let renaming = $state(false);
+	let artist = $state('');
+	let copyright = $state('');
+	let license = $state('');
 
 	/** Split `pf.Name` (a relative path like `foo/bar/IMG.jpg`) into directory
 	 *  prefix and basename. Sidecar's rename endpoint only accepts a bare
@@ -80,16 +92,21 @@
 	$effect(() => {
 		const pf = primaryFile(photo);
 		basename = splitName(pf.Name ?? '').base;
+		title = photo.Title ?? '';
 		caption = photo.Caption ?? '';
 		takenAt = (photo.TakenAt ?? '').slice(0, 10);
 		lat = photo.Lat ? String(photo.Lat) : '';
 		lng = photo.Lng ? String(photo.Lng) : '';
+		altitude = photo.Altitude ? String(photo.Altitude) : '';
 		country = photo.Country && photo.Country !== 'zz' ? photo.Country : '';
 		const det = photo.Details ?? {};
 		keywords = (det.Keywords ?? '')
 			.split(',')
 			.map((k) => k.trim())
 			.filter(Boolean);
+		artist = det.Artist ?? '';
+		copyright = det.Copyright ?? '';
+		license = det.License ?? '';
 	});
 
 	const patchMutation = createMutation(() => ({
@@ -145,6 +162,11 @@
 		if (caption === (photo.Caption ?? '')) return;
 		commit({ Caption: caption, CaptionSrc: 'manual' });
 	}
+	function commitTitle() {
+		const next = title.trim();
+		if (next === (photo.Title ?? '')) return;
+		commit({ Title: next, TitleSrc: 'manual' });
+	}
 	const takenAtValid = $derived(takenAt === '' || isValidISODate(takenAt));
 	// Path-based date guess. Scoped to the EXIF Stripped review tab: those
 	// are the photos with definitionally-untrusted dates, and showing the
@@ -185,14 +207,16 @@
 		const tail = (photo.TakenAt ?? '').slice(10) || 'T00:00:00Z';
 		const iso = `${takenAt}${tail}`;
 		if (iso === photo.TakenAt) return;
-		commit(buildTakenAtPatch(iso));
+		commit(buildTakenAtPatch(iso, photo));
 	}
 	function commitGps() {
 		const nlat = parseFloat(lat);
 		const nlng = parseFloat(lng);
+		const nalt = parseFloat(altitude);
 		const patch: UpdatePhotoBody = {};
 		if (!Number.isNaN(nlat) && nlat !== photo.Lat) patch.Lat = nlat;
 		if (!Number.isNaN(nlng) && nlng !== photo.Lng) patch.Lng = nlng;
+		if (!Number.isNaN(nalt) && nalt !== photo.Altitude) patch.Altitude = nalt;
 		if (Object.keys(patch).length) commit(patch);
 	}
 	function commitCountry() {
@@ -202,7 +226,7 @@
 		commit({ Country: next || 'zz', CountrySrc: 'manual' });
 	}
 
-	type DetailsKey = 'Keywords';
+	type DetailsKey = 'Keywords' | 'Artist' | 'Copyright' | 'License';
 	function commitDetails(field: DetailsKey, value: string) {
 		const prev = (photo.Details ?? {})[field] ?? '';
 		if (value === prev) return;
@@ -283,7 +307,42 @@
 	const currentRating = $derived(photoMark.rating ?? 0);
 	const currentColor = $derived(photoMark.color ?? '');
 
+	// Named face markers across all file variants, deduped by subject.
+	// Slug mirrors PhotoPrism's slugify (lowercase, diacritics stripped,
+	// non-alphanumerics collapsed to '-') so the person link resolves the
+	// same drill URL the sidebar list uses.
+	function personSlug(name: string): string {
+		return name
+			.toLowerCase()
+			.normalize('NFKD')
+			.replace(/[\u0300-\u036f]/g, '')
+			.replace(/[^a-z0-9]+/g, '-')
+			.replace(/^-+|-+$/g, '');
+	}
+	const peopleChips = $derived.by(() => {
+		const seen = new Map<string, { subjUid: string; name: string; slug: string }>();
+		for (const f of photo.Files ?? []) {
+			for (const m of f.Markers ?? []) {
+				if (m.Invalid || !m.Name || !m.SubjUID || seen.has(m.SubjUID)) continue;
+				seen.set(m.SubjUID, { subjUid: m.SubjUID, name: m.Name, slug: personSlug(m.Name) });
+			}
+		}
+		return [...seen.values()];
+	});
+
 	const pf = $derived(primaryFile(photo));
+	// Video facts come from the video variant (primary is often the JPEG
+	// poster for Live Photos / transcoded clips).
+	const vf = $derived(isVideo(photo) ? videoFile(photo) : null);
+	const durationStr = $derived.by(() => {
+		// PpFile.Duration is Go time.Duration → nanoseconds.
+		const ns = vf?.Duration ?? 0;
+		if (ns <= 0) return '';
+		const totalSec = Math.round(ns / 1_000_000_000);
+		const m = Math.floor(totalSec / 60);
+		const s = totalSec % 60;
+		return `${m}:${String(s).padStart(2, '0')}`;
+	});
 	const dirPath = $derived(splitName(pf.Name ?? '').dir);
 	const folderLabel = $derived(dirPath ? `${dirPath}/` : '/');
 	const dims = $derived(pf.Width && pf.Height ? `${pf.Width}×${pf.Height}` : '—');
@@ -508,6 +567,17 @@
 			</span>
 		</summary>
 		<div class="space-y-2 p-2 pt-1">
+			<div class="space-y-1">
+				<div class="text-[10px] uppercase tracking-wide text-muted-foreground">Title</div>
+				<input
+					type="text"
+					placeholder="Add a title…"
+					class="w-full rounded border border-input bg-background px-1.5 py-1 text-xs shadow-sm focus:outline-none focus:ring-1 focus:ring-ring"
+					bind:value={title}
+					onblur={commitTitle}
+				/>
+			</div>
+
 			<div class="space-y-1">
 				<div class="text-[10px] uppercase tracking-wide text-muted-foreground">Note</div>
 				<textarea
@@ -604,6 +674,27 @@
 				</div>
 			</div>
 
+			<!-- Recognized people — named face markers on this photo's files.
+			     Read-only chips linking to the person's page. -->
+			{#if peopleChips.length > 0}
+				<div class="space-y-1">
+					<div class="text-[10px] uppercase tracking-wide text-muted-foreground">People</div>
+					<div class="flex flex-wrap gap-1">
+						{#each peopleChips as person (person.subjUid)}
+							<button
+								type="button"
+								class="inline-flex items-center gap-1 rounded-full border border-border bg-secondary px-1.5 py-0.5 text-[10px] hover:bg-accent"
+								onclick={() => void navigateToTag('people', person.slug)}
+								title={`View photos of ${person.name}`}
+							>
+								<User class="h-2.5 w-2.5 text-muted-foreground" />
+								{person.name}
+							</button>
+						{/each}
+					</div>
+				</div>
+			{/if}
+
 			<!-- Auto-labels (PhotoPrism's TensorFlow classifier output). Read-
 			     only: editing labels requires re-indexing on PhotoPrism's
 			     side. The dashed border + lower contrast distinguishes them
@@ -678,6 +769,62 @@
 					onblur={commitCountry}
 				/>
 			</label>
+			<label class="flex flex-col gap-0.5">
+				<span class="text-[9px] text-muted-foreground">Altitude (m)</span>
+				<input
+					type="number"
+					step="1"
+					class="rounded border border-input bg-background px-1 py-0.5 text-[10px] focus:outline-none focus:ring-1 focus:ring-ring"
+					bind:value={altitude}
+					onblur={commitGps}
+				/>
+			</label>
+		</div>
+	</details>
+
+	<!-- Credits — IPTC provenance fields (Artist / Copyright / License).
+	     Closed by default; persists once opened. -->
+	<details
+		class="rounded border border-border"
+		open={getMetadataSectionOpen('credits', false)}
+		ontoggle={(e) => setMetadataSection('credits', e.currentTarget.open)}
+	>
+		<summary
+			class="cursor-pointer px-2 py-1 text-[10px] uppercase tracking-wide text-muted-foreground"
+		>
+			Credits
+		</summary>
+		<div class="space-y-1.5 p-2 pt-1">
+			<label class="flex flex-col gap-0.5">
+				<span class="text-[9px] text-muted-foreground">Artist</span>
+				<input
+					type="text"
+					placeholder="Photographer…"
+					class="rounded border border-input bg-background px-1.5 py-0.5 text-[10px] focus:outline-none focus:ring-1 focus:ring-ring"
+					bind:value={artist}
+					onblur={() => commitDetails('Artist', artist.trim())}
+				/>
+			</label>
+			<label class="flex flex-col gap-0.5">
+				<span class="text-[9px] text-muted-foreground">Copyright</span>
+				<input
+					type="text"
+					placeholder="© …"
+					class="rounded border border-input bg-background px-1.5 py-0.5 text-[10px] focus:outline-none focus:ring-1 focus:ring-ring"
+					bind:value={copyright}
+					onblur={() => commitDetails('Copyright', copyright.trim())}
+				/>
+			</label>
+			<label class="flex flex-col gap-0.5">
+				<span class="text-[9px] text-muted-foreground">License</span>
+				<input
+					type="text"
+					placeholder="e.g. CC BY-NC 4.0"
+					class="rounded border border-input bg-background px-1.5 py-0.5 text-[10px] focus:outline-none focus:ring-1 focus:ring-ring"
+					bind:value={license}
+					onblur={() => commitDetails('License', license.trim())}
+				/>
+			</label>
 		</div>
 	</details>
 
@@ -753,6 +900,18 @@
 			{/if}
 			<dt class="text-muted-foreground">Type</dt>
 			<dd class="text-foreground/80">{pf.FileType ?? photo.Type ?? '—'}</dd>
+			{#if durationStr}
+				<dt class="text-muted-foreground">Duration</dt>
+				<dd class="text-foreground/80">{durationStr}</dd>
+			{/if}
+			{#if vf?.FPS}
+				<dt class="text-muted-foreground">FPS</dt>
+				<dd class="text-foreground/80">{Math.round(vf.FPS * 10) / 10}</dd>
+			{/if}
+			{#if vf?.Codec}
+				<dt class="text-muted-foreground">Codec</dt>
+				<dd class="text-foreground/80">{vf.Codec}</dd>
+			{/if}
 			<dt class="text-muted-foreground">Hash</dt>
 			<dd class="break-all font-mono text-foreground/70">{pf.Hash?.slice(0, 16) ?? '—'}…</dd>
 			<dt class="text-muted-foreground">Indexed</dt>

web/src/lib/components/sidebar/TagsBrowserSidebar.svelte

@@ -427,7 +427,7 @@
 				title={filterText ? 'No people match the filter' : 'No people yet'}
 				description={filterText
 					? undefined
-					: 'PhotoPrism creates a person whenever it clusters detected faces. Make sure face recognition is enabled and indexed.'}
+					: 'A person appears here once you name a detected face — use the "Name new faces" cards on the right.'}
 			/>
 		{:else}
 			<div bind:this={scrollEl} class="min-h-0 flex-1 overflow-y-auto">

web/src/lib/services/photoActions.ts

@@ -104,7 +104,7 @@ export async function acceptDateAndKeep(uids: string[]): Promise<void> {
 				originalName: p.OriginalName,
 				path
 			});
-			if (guess) await updatePhoto(p, buildTakenAtPatch(`${guess.iso}T00:00:00Z`));
+			if (guess) await updatePhoto(p, buildTakenAtPatch(`${guess.iso}T00:00:00Z`, p));
 		}
 		await approvePhoto(id);
 		return id;

web/src/lib/services/photoprism.ts

@@ -343,6 +343,8 @@ export async function getPhoto(uid: string): Promise<PpPhoto> {
  */
 export interface UpdatePhotoBody {
 	OriginalName?: string;
+	Title?: string;
+	TitleSrc?: 'manual' | '';
 	Caption?: string;
 	CaptionSrc?: 'manual' | '';
 	Archived?: boolean;
@@ -373,17 +375,43 @@ export function isValidISODate(s: string): boolean {
 	return d.toISOString().slice(0, 10) === s;
 }
 
-export function buildTakenAtPatch(iso: string): UpdatePhotoBody {
+/** PhotoPrism serializes TakenAtLocal with a `Z` suffix even though it's
+ *  semantically wall-clock time in the photo's TimeZone. Force-parse as
+ *  UTC so offset math never picks up the *browser's* timezone. */
+function parseAsUtc(s: string): number {
+	return Date.parse(/(Z|[+-]\d{2}:?\d{2})$/.test(s) ? s : s + 'Z');
+}
+
+/**
+ * `photo` supplies the existing TakenAt/TakenAtLocal pair so the photo's
+ * UTC↔local offset survives the edit. Without it (or without a prior
+ * pair) local falls back to UTC — correct for TimeZone-less photos.
+ * Previously this forced `TakenAtLocal = UTC`, which both let PhotoPrism
+ * clobber manual edits when recomputing local time from TimeZone and
+ * shifted Year/Month/Day for photos taken far from UTC.
+ */
+export function buildTakenAtPatch(
+	iso: string,
+	photo?: { TakenAt?: string; TakenAtLocal?: string }
+): UpdatePhotoBody {
 	const d = new Date(iso);
 	if (Number.isNaN(d.getTime())) return {};
 	const utc = d.toISOString().replace(/\.\d+Z$/, 'Z');
+	let offsetMs = 0;
+	if (photo?.TakenAt && photo?.TakenAtLocal) {
+		const a = parseAsUtc(photo.TakenAt);
+		const b = parseAsUtc(photo.TakenAtLocal);
+		if (!Number.isNaN(a) && !Number.isNaN(b)) offsetMs = b - a;
+	}
+	const local = new Date(d.getTime() + offsetMs);
 	return {
 		TakenAt: utc,
-		TakenAtLocal: utc,
+		TakenAtLocal: local.toISOString().replace(/\.\d+Z$/, 'Z'),
 		TakenSrc: 'manual',
-		Year: d.getUTCFullYear(),
+		// PhotoPrism derives Year/Month/Day from local wall-clock time.
-		Month: d.getUTCMonth() + 1,
+		Year: local.getUTCFullYear(),
-		Day: d.getUTCDate()
+		Month: local.getUTCMonth() + 1,
+		Day: local.getUTCDate()
 	};
 }
 
@@ -694,35 +722,6 @@ export async function aggregateKeywords(): Promise<AggregatedKeyword[]> {
 	return Array.from(buckets.values()).sort((a, b) => b.count - a.count);
 }
 
-async function hasPhotosMatching(q: string): Promise<boolean> {
-	const resp = await sidecar.get<PpPhoto[]>('/api/sidecar/timeline', {
-		params: { count: 1, offset: 0, q }
-	});
-	return Array.isArray(resp.data) && resp.data.length > 0;
-}
-
-async function filterByUserPhotos<T>(
-	items: T[],
-	queryFor: (item: T) => string
-): Promise<T[]> {
-	if (userBasePath() === '') return items;
-	const CONCURRENCY = 8;
-	const out: T[] = [];
-	for (let i = 0; i < items.length; i += CONCURRENCY) {
-		const batch = items.slice(i, i + CONCURRENCY);
-		const checks = await Promise.all(
-			batch.map(async (item) => ({
-				item,
-				has: await hasPhotosMatching(queryFor(item))
-			}))
-		);
-		for (const { item, has } of checks) {
-			if (has) out.push(item);
-		}
-	}
-	return out;
-}
-
 export async function listLabels(): Promise<PpLabel[]> {
 	// `all=true` includes labels PhotoPrism has soft-deleted (auto-hidden
 	// low-confidence classifier hits, manually-removed labels). They're
@@ -762,10 +761,42 @@ export interface PpSubject {
 }
 
 export async function listSubjects(): Promise<PpSubject[]> {
-	const { data } = await http.get<PpSubject[]>('/subjects', {
+	// Sidecar proxy scopes PhotoCount (and drops out-of-scope people) with
+	// one SQL pass, replacing the old client-side probe-per-subject filter.
+	const { data } = await sidecar.get<PpSubject[]>('/api/sidecar/subjects', {
 		params: { count: 1000, order: 'count' }
 	});
-	return filterByUserPhotos(data ?? [], (s) => `person:${s.Slug}`);
+	return data ?? [];
+}
+
+// ── Face clusters (unnamed people) ──────────────────────────────────────────
+//
+// PhotoPrism only creates a Subject once someone names a detected face
+// cluster. The sidecar lists clusters awaiting a name (scoped to the
+// caller's BasePath); naming goes through PhotoPrism's own flow — a PUT
+// on the cluster's representative marker — which creates the Subject and
+// propagates it across the whole cluster.
+
+export interface UnnamedFaceCluster {
+	faceId: string;
+	count: number;
+	/** Marker crop hash — renders via the standard thumb endpoint. */
+	thumb: string;
+	markerUid: string;
+}
+
+export async function listUnnamedFaces(): Promise<UnnamedFaceCluster[]> {
+	const { data } = await sidecar.get<{ clusters: UnnamedFaceCluster[] }>(
+		'/api/sidecar/faces/unnamed'
+	);
+	return data?.clusters ?? [];
+}
+
+export async function nameFaceCluster(markerUid: string, name: string): Promise<void> {
+	await http.put(`/markers/${encodeURIComponent(markerUid)}`, {
+		Name: name,
+		SubjSrc: 'manual'
+	});
 }
 
 export async function updateSubject(uid: string, patch: Partial<PpSubject>): Promise<PpSubject> {

web/src/lib/types/photoprism.ts

@@ -257,10 +257,17 @@ export function isVideo(p: PpPhoto): boolean {
 
 /** Return the Files[] entry that carries the actual video stream. Falls back
  *  to primaryFile() if no video MediaType is present (shouldn't happen for
- *  Type === 'video' but keeps the call site total). */
+ *  Type === 'video' but keeps the call site total).
+ *
+ *  PhotoPrism serializes MediaType as the bare word "video" (verified
+ *  against prod), not a MIME type — the old `startsWith('video/')` check
+ *  never matched, so this always fell back to the JPEG poster and video
+ *  facts (duration/codec/fps) were unreachable. */
 export function videoFile(p: PpPhoto): PpFile {
 	const files = p.Files ?? [];
-	const v = files.find((f) => f.MediaType?.startsWith('video/'));
+	const v = files.find(
+		(f) => f.MediaType === 'video' || f.MediaType?.startsWith('video/')
+	);
 	return v ?? primaryFile(p);
 }
 
@@ -276,6 +283,34 @@ export interface PpFile {
 	Size?: number;
 	FileType?: string;
 	MediaType?: string;
+	Codec?: string;
+	/** Video duration in nanoseconds (Go time.Duration serialization). */
+	Duration?: number;
+	FPS?: number;
+	Frames?: number;
+	/** EXIF orientation 1–8. */
+	Orientation?: number;
+	HDR?: boolean;
+	Projection?: string;
+	/** Face/subject markers detected in this file (present on
+	 *  GET /photos/:uid responses). */
+	Markers?: PpMarker[];
+}
+
+/** A detected region in a file — for our purposes always a face. Named
+ *  markers carry the subject they were matched to. */
+export interface PpMarker {
+	UID: string;
+	Type?: string;
+	Src?: string;
+	Name?: string;
+	SubjUID?: string;
+	SubjSrc?: string;
+	FaceID?: string;
+	Invalid?: boolean;
+	Score?: number;
+	/** Crop hash renderable via the standard thumb endpoint. */
+	Thumb?: string;
 }
 
 export type PpThumbSize =

web/src/routes/tags/[category]/[[value]]/+page.svelte

@@ -32,6 +32,7 @@
 	import { countryName } from '$lib/utils/countries';
 	import BulkActionBar from '$lib/components/timeline/BulkActionBar.svelte';
 	import BulkMetadataSidebar from '$lib/components/sidebar/BulkMetadataSidebar.svelte';
+	import NewFacesPanel from '$lib/components/people/NewFacesPanel.svelte';
 	import PhotoGrid from '$lib/components/timeline/PhotoGrid.svelte';
 	import RightSidebar from '$lib/components/sidebar/RightSidebar.svelte';
 	import SkeletonGrid from '$lib/components/timeline/SkeletonGrid.svelte';
@@ -216,13 +217,28 @@
 </Toolbar>
 
 {#if !selectedValue}
-	<main class="flex min-h-0 flex-1 items-center justify-center p-8">
+	{#if category === 'people'}
-		<EmptyState
+		<!-- No person selected: surface the naming workflow instead of a
-			icon={Tag}
+		     bare prompt — naming is what creates people in the first place. -->
-			title={`Pick a ${category ?? 'tag'} from the sidebar`}
+		<main class="min-h-0 flex-1 overflow-y-auto p-6">
-			description="Click a row in the panel on the left to filter the photo grid by that tag."
+			<NewFacesPanel />
-		/>
+			<div class="mt-8 flex items-center justify-center">
-	</main>
+				<EmptyState
+					icon={Tag}
+					title="Pick a person from the sidebar"
+					description="Click a row in the panel on the left to see that person's photos."
+				/>
+			</div>
+		</main>
+	{:else}
+		<main class="flex min-h-0 flex-1 items-center justify-center p-8">
+			<EmptyState
+				icon={Tag}
+				title={`Pick a ${category ?? 'tag'} from the sidebar`}
+				description="Click a row in the panel on the left to filter the photo grid by that tag."
+			/>
+		</main>
+	{/if}
 {:else}
 	<div class="flex min-h-0 flex-1">
 		<div class="flex min-w-0 flex-1 flex-col">