M6.12: Brown Bear / Polar Bear / Moose-Folk restoration

Per audit item #5 — restore the doc trait/detriment lists for the
three species that had the largest gaps.

Brown Bear-Folk: replace Rending Claws (1d8 + STR with two-paw rend)
with Devastating Swipe (2d6 + STR slashing or shove 10 ft.). Drop
Winter Hibernation — the broader Hibernation Recovery now lives at
the clade level (M6.9). Add Forager's Nose (advantage on Survival
to find food, scent-id plants) and Stubborn Vitality (advantage on
death saves). Add the missing detriment pair: Slow Burn (act last
in unexpected combat) and Accidental Destruction (DEX-fail-by-5
breaks objects).

Polar Bear-Folk: upgrade Arctic Adaptation (cold resistance, swim =
walking, env immunity) to Arctic Apex (cold IMMUNITY, swim 30 ft,
hold-breath 15 min). Drop White Pelt (not in doc). Add Patient
Hunter (no-move turn → +1d8 next melee) and Insulating Bulk
(resistance to non-magical bludgeoning). Rename Polar Appetite to
Resource Hungry (doc name) and add the missing Heat Vulnerable
detriment (CON saves above 75°F escalating at 90°F).

Moose-Folk: replace Broad Antlers (1d10 + STR, charge prone) with
Palmate Antlers (2d6 + STR + crit-stun). Replace Swamp Strider with
Wetland Wader (adds swim 20 ft + 5-min breath-hold). Add Don't Tread
on Me (counts +1 size for grapple/shove + reaction kick on adjacent
melee, prof-bonus uses). Add the missing detriment pair: Ursid-Scale
Problems (Large infrastructure issues + Stealth disadvantage) and
Solitary Cervid (no Herd Coordination, CHA disadvantage in groups
larger than 4).

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

Content/Data/species.json

@@ -160,10 +160,14 @@
     "ability_mods": { "STR": 1 },
     "base_speed_ft": 30,
     "traits": [
-      { "id": "rending_claws",         "name": "Rending Claws",         "description": "Unarmed claw attacks deal 1d8 + STR slashing. Two-paw rend: if both claw attacks hit the same target in one Attack action, deal an extra 1d6 damage." },
+      { "id": "devastating_swipe",     "name": "Devastating Swipe",     "description": "Unarmed claw attack deals 2d6 + STR slashing. On a hit, you may choose to forgo damage and instead shove the target up to 10 ft. in any direction." },
-      { "id": "winter_hibernation",    "name": "Winter Hibernation",    "description": "Once per year, enter a deep restorative sleep for 1d4 weeks. On waking, fully heal and remove all levels of exhaustion." }
+      { "id": "foragers_nose",         "name": "Forager's Nose",        "description": "Advantage on Survival checks to find food in any natural environment. Identify edible vs. toxic plants and fungi by scent." },
+      { "id": "stubborn_vitality",     "name": "Stubborn Vitality",     "description": "Advantage on death saving throws." }
     ],
-    "detriments": []
+    "detriments": [
+      { "id": "slow_burn",             "name": "Slow Burn",             "description": "Act last in the first round of any combat where you were not expecting a fight (initiative count 0, regardless of roll). Ursid threat-processing takes a moment to spool up." },
+      { "id": "accidental_destruction","name": "Accidental Destruction","description": "When you fail a DEX check by 5 or more while interacting with objects or structures not built for your size, you break them. Tools, furniture, delicate mechanisms, occasionally other people's belongings." }
+    ]
   },
   {
     "id": "polar_bear",
@@ -173,11 +177,13 @@
     "ability_mods": { "WIS": 1 },
     "base_speed_ft": 30,
     "traits": [
-      { "id": "arctic_adaptation",     "name": "Arctic Adaptation",     "description": "Resistance to cold damage. Immunity to environmental cold effects. Swim speed equal to walking speed." },
+      { "id": "arctic_apex",           "name": "Arctic Apex",           "description": "Immunity to cold damage and cold environments. Swim speed of 30 ft. Hold your breath for 15 minutes." },
-      { "id": "white_pelt",            "name": "White Pelt",            "description": "Advantage on Stealth checks in snow, ice, or arctic terrain." }
+      { "id": "patient_hunter",        "name": "Patient Hunter",        "description": "If you do not move during your turn, your next melee attack before the end of your next turn deals an additional 1d8 damage. Stillness precedes the strike." },
+      { "id": "insulating_bulk",       "name": "Insulating Bulk",       "description": "Resistance to non-magical bludgeoning damage. Layers of fat and fur absorb impact." }
     ],
     "detriments": [
-      { "id": "polar_appetite",        "name": "Polar Appetite",        "description": "Requires triple rations daily. Without them, gain a level of exhaustion every 8 hours." }
+      { "id": "heat_vulnerable",       "name": "Heat Vulnerable",       "description": "In temperatures above 75°F / 24°C, CON save (DC 12) every hour or gain exhaustion. Above 90°F, the DC increases to 15. Polar bear-folk suffer in warm climates." },
+      { "id": "resource_hungry",       "name": "Resource Hungry",       "description": "Requires triple standard rations (caloric needs are massive). Failure to meet this imposes exhaustion at an accelerated rate." }
     ]
   },
   {
@@ -218,10 +224,14 @@
     "ability_mods": { "CON": 1 },
     "base_speed_ft": 30,
     "traits": [
-      { "id": "broad_antlers",         "name": "Broad Antlers",         "description": "Antler attack deals 1d10 + STR piercing. Charging attack: if you move at least 20 ft. straight before attacking, target makes a STR save (DC = 8 + prof + STR) or is knocked prone." },
+      { "id": "dont_tread_on_me",      "name": "Don't Tread on Me",     "description": "Count as one size larger for grappling, shoving, and resisting forced movement. Creatures that hit you with a melee attack within 5 ft. provoke a free kick (1d8 + STR) as a reaction. Uses equal to proficiency bonus per long rest." },
-      { "id": "swamp_strider",         "name": "Swamp Strider",         "description": "No movement penalty in marsh, mud, snow, or shallow water." }
+      { "id": "palmate_antlers",       "name": "Palmate Antlers",       "description": "Antler attack deals 2d6 + STR bludgeoning. On a critical hit, the target is stunned until the end of their next turn. These antlers are not decorative." },
+      { "id": "wetland_wader",         "name": "Wetland Wader",         "description": "No movement penalty in difficult terrain caused by water, mud, or swamp. Swim speed of 20 ft. Hold your breath for 5 minutes." }
     ],
-    "detriments": []
+    "detriments": [
+      { "id": "ursid_scale_problems",  "name": "Ursid-Scale Problems",  "description": "As a Large creature, you share many of the infrastructure problems of Ursidae — standard furniture, doorways, and vehicles are too small. Disadvantage on DEX (Stealth) checks — you are not subtle." },
+      { "id": "solitary_cervid",       "name": "Solitary Cervid",       "description": "Unlike most Cervidae, moose-folk are not herd-oriented. You do not benefit from Herd Coordination effects and have disadvantage on CHA checks in groups larger than 4. You don't do committees." }
+    ]
   },
   {
     "id": "rabbit",