play images: tablet, TV and Wear sets are optional; play.tablets switch (default: tablet renders exist); a missing optional set never deletes Play's images without --prune

A phone-only project aborted with 'no sevenInchScreenshots'. Play requires the 512 icon, the 1024x500 feature graphic and at least 2 screenshots (Play Console Help answer 9866151). play images uploads what exists and prints an info line for missing optional sets; play.tablets true makes missing tablet sets an error in shots render/check/gallery, validate and play images. Pitfall 19.

cli/data/flags.json

@@ -74,6 +74,7 @@
    "jobs",
    "name",
    "off",
+   "prune",
    "src",
    "variant",
    "write"
@@ -120,6 +121,7 @@
    "include-drafts",
    "jobs",
    "name",
+   "prune",
    "src",
    "traffic",
    "variant",
@@ -152,6 +154,7 @@
   "apple screenshots": [
    "include-drafts",
    "jobs",
+   "prune",
    "src",
    "variant",
    "write"
@@ -369,6 +372,7 @@
   ],
   "play images": [
    "include-drafts",
+   "prune",
    "src",
    "variant",
    "write"
@@ -599,6 +603,7 @@
    "no-scan",
    "out",
    "play",
+   "prune",
    "react-native",
    "src",
    "unity",
@@ -760,6 +765,7 @@
    "production",
    "profile",
    "project",
+   "prune",
    "q",
    "rating",
    "react-native",
@@ -1027,7 +1033,7 @@
    "storebound play data-safety [--csv out.csv] [--dry] [--force]"
   ],
   "play images": [
-   "storebound play images [--dry] [--only en-US,de-DE] [--src store/renders] [--variant b]"
+   "storebound play images [--dry] [--only en-US,de-DE] [--src store/renders] [--variant b] [--prune]"
   ],
   "play listing": [
    "storebound play listing [--dry] [--json] [--only en-US,de-DE] [--include-drafts]",