feat(rules): add alignment field to Combatant with axis gating flags

Adds the PF1e two-axis alignment code (LG/NG/CG/LN/N/CN/LE/NE/CE,
default N) to the Combatant model with a strict validator, derived
is_lawful/is_chaotic/is_good/is_evil properties, exposure in the
observation snapshot, and alignment values for all monsters and PCs
sourced from the bestiary KB and the Foundry sheets.

data/monsters/celestial_wolf.json

@@ -1,5 +1,6 @@
 {
  "name": "Celestial Wolf",
+ "alignment": "NG",
  "level": 2,
  "size": "Medium",
  "abilities": {
@@ -56,7 +57,7 @@
   "electricity": 5
  },
  "spell_resistance": 6,
- "notes": "SRD Bestiary wolf (2d8+4 hp 13, AC 14/touch 12/flat 12, Fort +5, Will +1, bite +2 1d6+1 plus trip, Str 13 Dex 15 Con 15) + celestial template. Encoded from the template: DR 5/magic, energy resistance acid/cold/electricity 5, SR 6 (CR 1 + 5). Not encodable in this model: smite evil 2/day (+2 damage vs evil), the bite's free trip on hit (the engine has trip only as a standard-action maneuver, no auto-trip attack qualifier), and the weapon model has no magic property so no equipment bypasses the DR 5/magic (correct for mundane weapons). Summoning scaling (energy resistance +2 and SR +5 per summon spell level above 2nd) is not modeled; this sheet is the summon monster II baseline.",
+ "notes": "SRD Bestiary wolf (2d8+4 hp 13, AC 14/touch 12/flat 12, Fort +5, Will +1, bite +2 1d6+1 plus trip, Str 13 Dex 15 Con 15) + celestial template. Encoded from the template: DR 5/magic, energy resistance acid/cold/electricity 5, SR 6 (CR 1 + 5). Not encodable in this model: smite evil 2/day (+2 damage vs evil), the bite's free trip on hit (the engine has trip only as a standard-action maneuver, no auto-trip attack qualifier), and the weapon model has no magic property so no equipment bypasses the DR 5/magic (correct for mundane weapons). Summoning scaling (energy resistance +2 and SR +5 per summon spell level above 2nd) is not modeled; this sheet is the summon monster II baseline. Alignment inferred: SRD celestial template = any good; NG chosen for the good axis with neutral law axis",
  "source": "summon monster II",
  "features": [],
  "spells": [],

data/monsters/giant_belostomatid.json

@@ -1,5 +1,6 @@
 {
  "name": "Giant Belostomatid",
+ "alignment": "N",
  "level": 3,
  "size": "Large",
  "cr": "3",

data/monsters/goblin.json

@@ -1,5 +1,6 @@
 {
   "name": "Goblin",
+  "alignment": "NE",
   "level": 1,
   "size": "Small",
   "cr": "1/3",

data/monsters/lich.json

@@ -1,5 +1,6 @@
 {
   "name": "Lich",
+  "alignment": "NE",
   "level": 11,
   "size": "Medium",
   "creature_type": "undead",

data/monsters/orc.json

@@ -1,5 +1,6 @@
 {
   "name": "Orc",
+  "alignment": "CE",
   "level": 1,
   "size": "Medium",
   "cr": "1/3",

data/monsters/thrune_agent.json

@@ -1,5 +1,6 @@
 {
   "name": "Thrune Agent",
+  "alignment": "LE",
   "level": 8,
   "size": "Medium",
   "creature_type": "living",

data/pcs/esha.json

@@ -1,5 +1,6 @@
 {
   "name": "Esha Randu",
+  "alignment": "LG",
   "level": 4,
   "size": "Medium",
   "abilities": {

data/pcs/esha_mount.json

@@ -1,5 +1,6 @@
 {
   "name": "Esha's Mount",
+  "alignment": "N",
   "level": 4,
   "size": "Large",
   "abilities": {
@@ -44,7 +45,7 @@
       "natural": true
     }
   ],
-  "notes": "Light-horse mount shared with Esha's sheet: hooves are 1d4 bludgeoning (SRD Bestiary horse, light - 2 hooves 1d4), natural attacks. No bite encoded: the SRD light horse has no bite attack and the Foundry sheet lists no mount bite (unlike Jeanne's sheet, which does).",
+  "notes": "Light-horse mount shared with Esha's sheet: hooves are 1d4 bludgeoning (SRD Bestiary horse, light - 2 hooves 1d4), natural attacks. No bite encoded: the SRD light horse has no bite attack and the Foundry sheet lists no mount bite (unlike Jeanne's sheet, which does). Alignment inferred: SRD animal (horse) is typically neutral; no alignment on the sheet",
   "source": "fiches_personnages/esha_sheet.json (mount)",
   "features": [
     "Combat Reflexes",

data/pcs/harvie.json

@@ -1,5 +1,6 @@
 {
  "name": "Harvie",
+ "alignment": "N",
  "level": 2,
  "size": "Small",
  "abilities": {

data/pcs/ierlieth.json

@@ -1,5 +1,6 @@
 {
  "name": "Ierlieth",
+ "alignment": "CN",
  "level": 4,
  "size": "Tiny",
  "abilities": {

data/pcs/jeanne.json

@@ -1,5 +1,6 @@
 {
   "name": "Jeanne",
+  "alignment": "N",
   "level": 4,
   "size": "Large",
   "abilities": {

data/pcs/misty.json

@@ -1,5 +1,6 @@
 {
  "name": "Misty",
+ "alignment": "NE",
  "level": 4,
  "size": "Medium",
  "abilities": {

data/pcs/nairda.json

@@ -1,5 +1,6 @@
 {
   "name": "Nairda Guisenda",
+  "alignment": "CN",
   "level": 4,
   "size": "Medium",
   "abilities": {

data/pcs/oni.json

@@ -1,5 +1,6 @@
 {
  "name": "Oni Triumvir",
+ "alignment": "NG",
  "level": 4,
  "size": "Medium",
  "abilities": {

data/pcs/tammara.json

@@ -1,5 +1,6 @@
 {
   "name": "Tammara Cailean",
+  "alignment": "CG",
   "level": 4,
   "size": "Medium",
   "abilities": {