feat(ui+legacy): F8-05 owner-feedback round 1 — inspector tweaks + parser

Owner-reported polish on top of #48, plus a legacy-parser gap that
prevented verifying stationed ship groups against a real .REP fixture.

UI:
- Production: drop the empty `(production)` placeholder option. Owned
  planets always produce something, so the primary select now opens on
  `industry` by default when `planet.production` is null/unknown,
  keeping the row inside the four real production kinds at all times.
- Production: lock the row to a single line (no flex-wrap) and strip
  border + padding from the ✓/✗ buttons so the apply/cancel icons read
  as glyphs and the row no longer breaks into two visual rows for
  Research / Ship contexts where both selects are present.
- Cargo routes: the placeholder option is now an `<option disabled>`
  styled like a section header (greyed, italic) and reads "manage
  routes" instead of "cargo routes". The wording shifts the intent
  from a section label to an action prompt.

Legacy parser:
- F8-05 (#48 п.32) "Stationed ship groups" couldn't be verified against
  the dg fixture because the legacy `<Race> Groups` blocks (outside
  battles) and the `Unidentified Groups` block were dropped by the
  parser — both are now wired up. Foreign group rows parse the
  `# T D W S C T Q D P M` columns and resolve the destination against
  the parsed planet tables (rows with an invisible destination drop,
  matching the existing local-group convention). The legacy row
  carries no origin / range columns, so foreign groups surface as
  stationed at the destination.
- Smoke tests on every fixture extended with `otherGroups` and
  `unidentifiedGroups` counts. New focused unit test
  `TestParseOtherAndUnidentifiedGroups` covers the column layout, the
  drop-on-unknown-destination rule, and the `X Y`-only unidentified
  rows.
- `tools/local-dev/reports/dg/KNNTS039.json` and
  `tools/local-dev/reports/dg/KNNTS041.json` regenerated so the
  synthetic-loader fixtures carry the new arrays.
- README updated: the two sections move out of "Skipped sections" into
  a "Foreign and unidentified groups" block; package doc-comment
  reflects the broader scope.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

ui/frontend/src/lib/i18n/locales/en.ts

@@ -292,7 +292,6 @@ const en = {
 	"game.inspector.planet.rename.invalid.disallowed_character": "name contains disallowed characters",
 	"game.inspector.planet.production.title": "production",
 	"game.inspector.planet.production.main.aria": "production type",
-	"game.inspector.planet.production.main.placeholder": "(production)",
 	"game.inspector.planet.production.option.industry": "industry",
 	"game.inspector.planet.production.option.materials": "materials",
 	"game.inspector.planet.production.option.research": "research",
@@ -308,7 +307,7 @@ const en = {
 	"game.inspector.planet.production.ship.no_classes": "no ship classes designed yet",
 	"game.inspector.planet.production.apply": "apply production change",
 	"game.inspector.planet.production.cancel": "discard production change",
-	"game.inspector.planet.cargo.placeholder": "cargo routes",
+	"game.inspector.planet.cargo.placeholder": "manage routes",
 	"game.inspector.planet.cargo.slot.col": "colonists",
 	"game.inspector.planet.cargo.slot.cap": "industry",
 	"game.inspector.planet.cargo.slot.mat": "materials",

ui/frontend/src/lib/i18n/locales/ru.ts

@@ -293,7 +293,6 @@ const ru: Record<keyof typeof en, string> = {
 	"game.inspector.planet.rename.invalid.disallowed_character": "имя содержит недопустимые символы",
 	"game.inspector.planet.production.title": "производство",
 	"game.inspector.planet.production.main.aria": "тип производства",
-	"game.inspector.planet.production.main.placeholder": "(производство)",
 	"game.inspector.planet.production.option.industry": "промышленность",
 	"game.inspector.planet.production.option.materials": "сырьё",
 	"game.inspector.planet.production.option.research": "исследование",
@@ -309,7 +308,7 @@ const ru: Record<keyof typeof en, string> = {
 	"game.inspector.planet.production.ship.no_classes": "классы кораблей ещё не спроектированы",
 	"game.inspector.planet.production.apply": "применить изменение производства",
 	"game.inspector.planet.production.cancel": "отменить изменение производства",
-	"game.inspector.planet.cargo.placeholder": "грузовые маршруты",
+	"game.inspector.planet.cargo.placeholder": "управление маршрутами",
 	"game.inspector.planet.cargo.slot.col": "колонисты",
 	"game.inspector.planet.cargo.slot.cap": "промышленность",
 	"game.inspector.planet.cargo.slot.mat": "сырьё",

ui/frontend/src/lib/inspectors/planet/cargo-routes.svelte

@@ -191,7 +191,7 @@ torus distance via the F8-07 (#50) fix.
 			onchange={pickType}
 			disabled={disabled || pendingSlot !== null}
 		>
-			<option value="">
+			<option value="" disabled class="placeholder">
 				{i18n.t("game.inspector.planet.cargo.placeholder")}
 			</option>
 			{#each CARGO_LOAD_TYPE_VALUES as loadType (loadType)}
@@ -304,6 +304,10 @@ torus distance via the F8-07 (#50) fix.
 		cursor: not-allowed;
 		opacity: 0.5;
 	}
+	.select option.placeholder {
+		color: var(--color-text-muted);
+		font-style: italic;
+	}
 	.destination {
 		color: var(--color-text);
 	}

ui/frontend/src/lib/inspectors/planet/production.svelte

@@ -136,7 +136,14 @@ sciences win because they carry more user intent.
 		parseTarget(planet.production, localShipClass, localScience),
 	);
 
-	let mainSel = $state<MainSegment | "">("");
+	// An owned planet always produces something on the engine side, so
+	// the row defaults to `industry` when `planet.production` is
+	// somehow null/empty rather than carrying a separate "(none)"
+	// placeholder option. The user lands on a valid production type
+	// and can apply or change immediately.
+	const DEFAULT_MAIN: MainSegment = "industry";
+
+	let mainSel = $state<MainSegment>(DEFAULT_MAIN);
 	let targetSel = $state<string>("");
 
 	$effect(() => {
@@ -147,20 +154,19 @@ sciences win because they carry more user intent.
 		void planet.number;
 		void parsedMain;
 		void parsedTarget;
-		mainSel = parsedMain ?? "";
+		mainSel = parsedMain ?? DEFAULT_MAIN;
 		targetSel = parsedTarget ?? "";
 	});
 
 	const needsTarget = $derived(mainSel === "research" || mainSel === "ship");
 
 	const dirty = $derived(
-		(mainSel === "" ? null : mainSel) !== parsedMain
+		mainSel !== parsedMain
 			|| (targetSel === "" ? null : targetSel) !== parsedTarget,
 	);
 
 	const applyDisabled = $derived(
 		disabled
-			|| mainSel === ""
 			|| (needsTarget && targetSel === "")
 			|| !dirty,
 	);
@@ -168,8 +174,7 @@ sciences win because they carry more user intent.
 	const cancelDisabled = $derived(disabled || !dirty);
 
 	function pickMain(event: Event): void {
-		const value = (event.target as HTMLSelectElement).value as MainSegment | "";
-		mainSel = value;
+		mainSel = (event.target as HTMLSelectElement).value as MainSegment;
 		// Switching the primary list clears any pending secondary
 		// choice — the picker for the new main might not even include
 		// the previous target.
@@ -181,7 +186,7 @@ sciences win because they carry more user intent.
 	}
 
 	async function applyRow(): Promise<void> {
-		if (applyDisabled || draft === undefined || mainSel === "") return;
+		if (applyDisabled || draft === undefined) return;
 		if (mainSel === "industry") {
 			await emit("CAP", "");
 			return;
@@ -205,7 +210,7 @@ sciences win because they carry more user intent.
 	}
 
 	function cancelRow(): void {
-		mainSel = parsedMain ?? "";
+		mainSel = parsedMain ?? DEFAULT_MAIN;
 		targetSel = parsedTarget ?? "";
 	}
 
@@ -237,9 +242,6 @@ sciences win because they carry more user intent.
 			onchange={pickMain}
 			{disabled}
 		>
-			<option value="">
-				{i18n.t("game.inspector.planet.production.main.placeholder")}
-			</option>
 			<option value="industry">
 				{i18n.t("game.inspector.planet.production.option.industry")}
 			</option>
@@ -353,7 +355,7 @@ sciences win because they carry more user intent.
 		display: flex;
 		align-items: center;
 		gap: 0.35rem;
-		flex-wrap: wrap;
+		flex-wrap: nowrap;
 	}
 	.select {
 		flex: 1 1 6rem;
@@ -374,22 +376,21 @@ sciences win because they carry more user intent.
 	.icon-action {
 		flex: 0 0 auto;
 		font: inherit;
-		font-size: 0.9rem;
+		font-size: 1rem;
 		line-height: 1;
-		padding: 0.25rem 0.5rem;
+		padding: 0.15rem 0.2rem;
 		background: transparent;
 		color: var(--color-text-muted);
-		border: 1px solid var(--color-border);
-		border-radius: 3px;
+		border: 0;
+		border-radius: 0;
 		cursor: pointer;
 	}
 	.icon-action:not(:disabled):hover {
 		color: var(--color-text);
-		border-color: var(--color-accent);
 	}
 	.icon-action:disabled {
 		cursor: not-allowed;
-		opacity: 0.4;
+		opacity: 0.35;
 	}
 	.icon-action--apply:not(:disabled) {
 		color: var(--color-success);