t66: app names on a device that exposes none

The reported Shield names no app: `pm dump com.netflix.ninja` is ~2241 lines of
dumpsys and grep for `application-label` over the whole capture finds nothing.
The probe shipped `| head -300`, which cut the dump BEFORE the package section,
so "no label" was a truncation artefact; the sweep then named every app after
its own package id, and the apps editor pre-filled the `pkg=pkg` row the user
read as a bug.

  * the probe greps ON THE DEVICE for the three shapes Android prints
    (`application-label`, `nonLocalizedLabel`, `labelRes`); a quoted value is a
    name, `null` and a resource id are not. The dump is never truncated.
  * after APP_LABEL_PROBE_LIMIT consecutive "ran, no label" answers the device
    is taken at its word: the sweep stops spending a shell per package
    (APP_LABEL_TTL expiry re-checks, and a package whose probe FAILED still owes
    its retry — t57 UNIT 0 survives, driven by the app on screen).
  * ONE precedence chain in `ha_adb_common/app_label.resolve_package_name`, used
    by the media player, the Current App sensor, the discovery table, the source
    list and the apps editor: user map > device label > curated map > package id
    (the id shown ONCE, `name` empty when nothing names the app).
  * the curated table covers the user's 21 apps (community-maintained, not
    device truth) and the Configure row says when the device named nothing.
  * the real device shape is a test fixture (trimmed, and marked as such in the
    file: the raw capture is not in the repo) pinning that no label is
    extracted, that the probe count is bounded, and that `Netflix` surfaces.

Also drops the dead `ATTR_MEDIA_DAG_NOW_PLAYING` re-exports left by the t65
flattening and updates the RESEARCH_SHIELD now-playing note to the flat names.

No real Shield was available: the fetch/burst behaviour is exercised against the
documented Android output and the trimmed reproduction of the reported capture.

custom_components/nvidia_shield/const.py

@@ -3,7 +3,6 @@
 # Re-export shared Media DAG constants
 from .ha_adb_common.const import (  # noqa: F401
     ATTR_MEDIA_DAG_JELLYFIN_ENTITY,
-    ATTR_MEDIA_DAG_NOW_PLAYING,
     ATTR_MEDIA_DAG_RECEIVER_ENTITY,
     ATTR_MEDIA_DAG_RECEIVER_INPUT,
     ATTR_MEDIA_DAG_ROLE,
@@ -128,6 +127,26 @@ APP_LABEL_TTL = 24 * 3600
 # unlikely to collide with a manifest line.
 APP_LABEL_EXIT_MARKER = "__NSH_EXIT:"
 
+# t66: the label candidates searched FOR ON THE DEVICE. A real `pm dump` on the
+# user's Shield is ~2241 lines of dumpsys (package + activity + meminfo +
+# procstats + usagestats + batterystats), and the old fetch shipped
+# ``| head -300`` — which cut before the package sections even appeared, so the
+# negative was a truncation artefact rather than an answer. Searching on-device
+# keeps the wire small AND the answer honest: these are the three shapes Android
+# prints for an app's label (see ha_adb_common/app_label.py for what counts as a
+# name in each).
+APP_LABEL_GREP_SHAPES = "application-label|nonLocalizedLabel|labelRes"
+
+# t66: how many label probes may come back "ran, no label" IN A ROW before the
+# device is treated as one that exposes no labels at all (this user's Shield).
+# One label-less package is ordinary (system/OEM packages often have none), so a
+# single miss proves nothing — but a run of them means the whole firmware keeps
+# its labels in resources we cannot read, and every further ``pm dump`` per
+# package is a shell spent on a question already answered. The conclusion expires
+# with APP_LABEL_TTL so a device change is noticed within a day, and any label
+# found anywhere resets the run.
+APP_LABEL_PROBE_LIMIT = 5
+
 # P4-2a adb_command service: rawADB shell on this entry — OFF by default
 # (same security posture as the core androidtv integration).
 CONF_ADB_COMMAND_ENABLED = "adb_command_enabled"
@@ -142,13 +161,38 @@ CONF_LOGCAT_EVENTS = "logcat_events"
 # re-stamped (repeat suppression).
 LOGCAT_SUPPRESS_WINDOW = 15.0
 
-# P4-2c BrowseMedia app directory fallback when the options map is empty
-# (curated; the packages are the plan's reference apps).
+# P4-2c/t66: the curated package -> name table. It is BOTH the BrowseMedia/source
+# directory fallback and the third tier of the app-name chain (after the user's
+# own map and a device label, before the raw package id) — on a Shield whose
+# `pm dump` carries no label at all it is the answer that makes names work.
+#
+# It is a community-maintained convenience, NOT device truth: package ids are
+# stable, display names change with vendors and app updates, and an app this
+# table has never heard of falls back to its package id (shown once). Users
+# override any entry in Configure > Apps, and that edit always wins. Adding a row
+# is deliberately trivial — keep the ids sorted so the diff stays reviewable.
 DEFAULT_APP_DIRECTORY = {
     "ar.tvplayer.tv": "TiviMate",
+    "be.digitalia.mediasession2mqtt": "MediaSession2MQTT",
+    "com.amazon.amazonvideo.livingroom": "Prime Video",
+    "com.esaba.downloader": "Downloader",
     "com.github.damontecres.wholphin": "Wholphin",
-    "com.netflix.ninja": "Netflix",
+    "com.google.android.sambadocumentsprovider": "Samba (SMB)",
+    "com.google.android.speech.pumpkin": "Google Speech Services",
+    "com.google.android.tts": "Speech Services by Google",
+    "com.google.android.tvlauncher": "Google TV launcher",
     "com.google.android.youtube.tv": "YouTube",
+    "com.hyperion.grabber": "Hyperion Grabber",
+    "com.lonelycatgames.Xplore": "X-plore File Manager",
+    "com.nendo.argosy": "Argosy",
+    "com.netflix.ninja": "Netflix",
+    "com.plexapp.mediaserver.smb": "Plex Media Server",
+    "com.retroarch": "RetroArch",
+    "com.spocky.projengmenu": "Projectivy Launcher",
+    "dev.jdtech.jellyfin": "Findroid",
+    "dev.trooped.tvquickbars": "TV Quick Actions",
+    "flar2.homebutton": "Button Mapper",
+    "tv.pluto.android": "Pluto TV",
 }
 
 # t57: best-effort icon per discovered app. `pm dump` does NOT expose the