M6.10: Leporidae trait restoration + HP math fix

Replace clade traits with the doc-canonical trio: Burst Speed (40 ft.
base + bonus-action Dash, prof-bonus uses), Tremor Sense (detect
ground-vibrating creatures within 30 ft.), Lucky Feet (reroll a 1
on a save, 1/short rest). Drop the misplaced Leaping Strides /
Burrow Savvy / Twitch Reflexes — those were thinner substitutes.

Detriments: Fragile Build now correctly halves to -2 HP/level (was
-1). Add Panic Cascade — forced-Dash on bad fear save, contagious to
allied Leporidae within 15 ft. Drop Constant Vigilance, which was
not in the doc.

Bump Rabbit-Folk base_speed_ft to 40 to match Burst Speed's clade
default. Hare-Folk stays at 45 (its species trait Open Ground Runner
sets that explicitly).

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

Content/Data/clades.json

@@ -103,13 +103,13 @@
     "ability_mods": { "STR": -1, "DEX": 2 },
     "languages": ["common", "leporid"],
     "traits": [
-      { "id": "leaping_strides",       "name": "Leaping Strides",       "description": "Long jump distance equal to your speed without a running start. High jump distance equal to half your speed without a running start." },
+      { "id": "burst_speed",           "name": "Burst Speed",           "description": "Base movement speed is 40 ft. As a bonus action, you can Dash (potential 80 ft. of movement in a turn). Uses equal to proficiency bonus per long rest." },
-      { "id": "burrow_savvy",          "name": "Burrow Savvy",          "description": "Proficiency in Survival in underground or warren environments. Advantage on Perception checks underground." },
+      { "id": "tremor_sense",          "name": "Tremor Sense",          "description": "Your powerful hind legs sense vibrations through the ground. Detect moving creatures within 30 ft. even if you cannot see or hear them, as long as both you and the creature are on the same surface." },
-      { "id": "twitch_reflexes",       "name": "Twitch Reflexes",       "description": "Advantage on initiative rolls. Reaction: when targeted by a ranged attack you can see, impose disadvantage on that attack roll. Uses equal to proficiency bonus per long rest." }
+      { "id": "lucky_feet",            "name": "Lucky Feet",            "description": "When you roll a 1 on a saving throw, you may reroll and must use the new result. Once per short rest." }
     ],
     "detriments": [
-      { "id": "fragile_body",          "name": "Fragile Body",          "description": "Hit point maximum reduced by 1 per level (minimum 1 HP per level). Disadvantage on STR saves against effects that would knock you prone." },
+      { "id": "fragile_build",         "name": "Fragile Build",         "description": "Hit point maximum reduced by 2 per level (minimum 1 HP per level). Hits that other species shrug off can be life-threatening." },
-      { "id": "constant_vigilance",    "name": "Constant Vigilance",    "description": "When in a new environment for less than 1 hour, you cannot benefit from a short rest — your nervous system refuses to settle." }
+      { "id": "panic_cascade",         "name": "Panic Cascade",         "description": "When you fail a WIS save against fear by 5 or more, you must spend your next turn Dashing directly away from the source. Repeat the save at the end of each turn. Allied Leporidae within 15 ft. of you must also make the save." }
     ]
   }
 ]

Content/Data/species.json

@@ -223,7 +223,7 @@
     "name": "Rabbit-Folk",
     "size": "small",
     "ability_mods": { "WIS": 1 },
-    "base_speed_ft": 30,
+    "base_speed_ft": 40,
     "traits": [
       { "id": "warren_dweller",        "name": "Warren Dweller",        "description": "Burrow speed 10 ft. through loose soil. Advantage on Stealth checks in your home warren. Community Resilience: once per long rest, when within 30 ft. of two or more allies, regain 1d4 + level HP." },
       { "id": "powerful_legs",         "name": "Powerful Legs",         "description": "Standing long jump distance equals your speed; running long jump doubles it." }