diff --git a/content/encounters/prototype_encounters.json b/content/encounters/prototype_encounters.json
new file mode 100644
index 0000000..5b6646f
--- /dev/null
+++ b/content/encounters/prototype_encounters.json
@@ -0,0 +1,16 @@
+{
+  "schemaVersion": 1,
+  "encounters": [
+    {
+      "id": "prototype_combat_pocket",
+      "displayName": "Prototype Combat Pocket",
+      "completionCriteria": { "kind": "defeat_all_targets" },
+      "requiredNpcInstanceIds": [
+        "prototype_npc_melee",
+        "prototype_npc_ranged",
+        "prototype_npc_elite"
+      ],
+      "rewardTableId": "prototype_combat_pocket_clear"
+    }
+  ]
+}
diff --git a/content/reward-tables/prototype_reward_tables.json b/content/reward-tables/prototype_reward_tables.json
new file mode 100644
index 0000000..b6048fa
--- /dev/null
+++ b/content/reward-tables/prototype_reward_tables.json
@@ -0,0 +1,13 @@
+{
+  "schemaVersion": 1,
+  "rewardTables": [
+    {
+      "id": "prototype_combat_pocket_clear",
+      "displayName": "Prototype Combat Pocket Clear",
+      "fixedGrants": [
+        { "itemId": "scrap_metal_bulk", "quantity": 10 },
+        { "itemId": "contract_handoff_token", "quantity": 1 }
+      ]
+    }
+  ]
+}
diff --git a/content/schemas/encounter-def.schema.json b/content/schemas/encounter-def.schema.json
new file mode 100644
index 0000000..9ce1e9a
--- /dev/null
+++ b/content/schemas/encounter-def.schema.json
@@ -0,0 +1,55 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "https://neon-sprawl.local/schemas/encounter-def.json",
+  "title": "EncounterDef",
+  "description": "Single encounter template row for catalogs (e.g. content/encounters/*_encounters.json). IDs are stable forever—rename display in displayName only. See docs/decomposition/modules/E5_M3_EncounterAndRewardTables.md.",
+  "type": "object",
+  "additionalProperties": false,
+  "required": [
+    "id",
+    "displayName",
+    "completionCriteria",
+    "requiredNpcInstanceIds",
+    "rewardTableId"
+  ],
+  "properties": {
+    "id": {
+      "type": "string",
+      "pattern": "^[a-z][a-z0-9_]*$",
+      "description": "Immutable encounter key for progress tracking and completion events."
+    },
+    "displayName": {
+      "type": "string",
+      "minLength": 1,
+      "description": "Player-facing label; safe to change without migrating character data."
+    },
+    "completionCriteria": {
+      "type": "object",
+      "additionalProperties": false,
+      "required": ["kind"],
+      "properties": {
+        "kind": {
+          "type": "string",
+          "description": "Prototype Slice 3: defeat all listed NPC instances.",
+          "enum": ["defeat_all_targets"]
+        }
+      }
+    },
+    "requiredNpcInstanceIds": {
+      "type": "array",
+      "minItems": 3,
+      "maxItems": 3,
+      "uniqueItems": true,
+      "items": {
+        "type": "string",
+        "pattern": "^[a-z][a-z0-9_]*$"
+      },
+      "description": "NPC instance ids from server PrototypeNpcRegistry (CI cross-ref set gate)."
+    },
+    "rewardTableId": {
+      "type": "string",
+      "pattern": "^[a-z][a-z0-9_]*$",
+      "description": "RewardTable id granted once on encounter complete."
+    }
+  }
+}
diff --git a/content/schemas/reward-grant-row.schema.json b/content/schemas/reward-grant-row.schema.json
new file mode 100644
index 0000000..edd75a9
--- /dev/null
+++ b/content/schemas/reward-grant-row.schema.json
@@ -0,0 +1,21 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "https://neon-sprawl.local/schemas/reward-grant-row.json",
+  "title": "RewardGrantRow",
+  "description": "Single fixed-grant row on a RewardTable (content/reward-tables/*_reward_tables.json).",
+  "type": "object",
+  "additionalProperties": false,
+  "required": ["itemId", "quantity"],
+  "properties": {
+    "itemId": {
+      "type": "string",
+      "pattern": "^[a-z][a-z0-9_]*$",
+      "description": "Item def id from content/items (prototype Slice 1: frozen six-item catalog)."
+    },
+    "quantity": {
+      "type": "integer",
+      "minimum": 1,
+      "description": "Units granted on encounter complete."
+    }
+  }
+}
diff --git a/content/schemas/reward-table.schema.json b/content/schemas/reward-table.schema.json
new file mode 100644
index 0000000..b224c05
--- /dev/null
+++ b/content/schemas/reward-table.schema.json
@@ -0,0 +1,28 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "https://neon-sprawl.local/schemas/reward-table.json",
+  "title": "RewardTable",
+  "description": "Single reward table row for catalogs (e.g. content/reward-tables/*_reward_tables.json). IDs are stable forever—rename display in displayName only. See docs/decomposition/modules/E5_M3_EncounterAndRewardTables.md.",
+  "type": "object",
+  "additionalProperties": false,
+  "required": ["id", "displayName", "fixedGrants"],
+  "properties": {
+    "id": {
+      "type": "string",
+      "pattern": "^[a-z][a-z0-9_]*$",
+      "description": "Immutable reward table key for encounter binding and loot routing."
+    },
+    "displayName": {
+      "type": "string",
+      "minLength": 1,
+      "description": "Player-facing label; safe to change without migrating character data."
+    },
+    "fixedGrants": {
+      "type": "array",
+      "minItems": 1,
+      "items": {
+        "$ref": "https://neon-sprawl.local/schemas/reward-grant-row.json"
+      }
+    }
+  }
+}
diff --git a/docs/decomposition/modules/CT_M1_ContentValidationPipeline.md b/docs/decomposition/modules/CT_M1_ContentValidationPipeline.md
index bb76187..1e89efd 100644
--- a/docs/decomposition/modules/CT_M1_ContentValidationPipeline.md
+++ b/docs/decomposition/modules/CT_M1_ContentValidationPipeline.md
@@ -55,6 +55,10 @@ Content tooling **Slice 1** — schemas + CI; **Slice 4** — server parity hard
 
 **NPC behavior catalogs ([NEO-87](https://linear.app/neon-sprawl/issue/NEO-87)):** the same script validates each row in `content/npc-behaviors/*_npc_behaviors.json` against [`content/schemas/npc-behavior-def.schema.json`](../../../content/schemas/npc-behavior-def.schema.json), rejects **duplicate `id`** across files, requires **`leashRadius` > `aggroRadius`** per row, and (E5 Slice 2) enforces the **frozen three-behavior** id set (`prototype_melee_pressure`, `prototype_ranged_control`, `prototype_elite_mini_boss`).
 
+**Reward table catalogs ([NEO-100](https://linear.app/neon-sprawl/issue/NEO-100)):** the same script validates each row in `content/reward-tables/*_reward_tables.json` against [`content/schemas/reward-table.schema.json`](../../../content/schemas/reward-table.schema.json) (grant rows via [`reward-grant-row.schema.json`](../../../content/schemas/reward-grant-row.schema.json)), rejects **duplicate `id`** across files and **duplicate `itemId`** within a table's **`fixedGrants`**, cross-checks every **`fixedGrants[].itemId`** against item catalogs, and (E5 Slice 3) enforces the **frozen one-table** id set (`prototype_combat_pocket_clear`) with fixed grant quantities.
+
+**Encounter catalogs ([NEO-100](https://linear.app/neon-sprawl/issue/NEO-100)):** the same script validates each row in `content/encounters/*_encounters.json` against [`content/schemas/encounter-def.schema.json`](../../../content/schemas/encounter-def.schema.json), rejects **duplicate `id`** across files, cross-checks **`rewardTableId`** against reward table catalogs, and (E5 Slice 3) enforces the **frozen one-encounter** id set (`prototype_combat_pocket`) with **`requiredNpcInstanceIds`** matching the three E5.M2 NPC instance ids.
+
 **Decomposition vocabulary:** the same workflow runs [`scripts/check_decomposition_language.py`](../../../scripts/check_decomposition_language.py) (stdlib only) over `docs/decomposition/**/*.md` to catch wording that treats **combat** as a leveled **`SkillDef`** line instead of **gig** progression (see script docstring for patterns). Adjust the script if a future doc needs a documented exception.
 
 ## Source anchors
diff --git a/docs/decomposition/modules/E5_M3_EncounterAndRewardTables.md b/docs/decomposition/modules/E5_M3_EncounterAndRewardTables.md
index ce7f83e..90e5ff7 100644
--- a/docs/decomposition/modules/E5_M3_EncounterAndRewardTables.md
+++ b/docs/decomposition/modules/E5_M3_EncounterAndRewardTables.md
@@ -74,6 +74,8 @@ The **first shipped encounter + reward spine** is **frozen** for prototype tunin
 |------------------|---------------|
 | **`prototype_combat_pocket_clear`** | **`scrap_metal_bulk` ×10**, **`contract_handoff_token` ×1** |
 
+**CI enforcement (NEO-100):** `scripts/validate_content.py` requires **exactly** encounter id **`prototype_combat_pocket`** and reward table id **`prototype_combat_pocket_clear`**; **`requiredNpcInstanceIds`** set must match server **`PrototypeNpcRegistry`** (`prototype_npc_melee`, `prototype_npc_ranged`, `prototype_npc_elite`); **`fixedGrants`** item ids from frozen item catalog with **no duplicate `itemId` per table**, quantities **`scrap_metal_bulk` ×10**, **`contract_handoff_token` ×1**; encounter **`rewardTableId`** cross-ref. Keep **`PROTOTYPE_E5M3_*`** and **`PROTOTYPE_E5M2_NPC_INSTANCE_IDS`** in sync with this table and [NEO-101](https://linear.app/neon-sprawl/issue/NEO-101) server loader. Plan: [NEO-100 implementation plan](../../plans/NEO-100-implementation-plan.md).
+
 **Payout policy:** Per-defeat **gig XP** stays on [NEO-44](../../plans/NEO-44-implementation-plan.md). Encounter complete grants **loot + quest token** **once** per player per encounter id. Full **E7.M2** quest credit routing consumes **`EncounterCompleteEvent`** (E5M3-09 hook stub).
 
 ## Source anchors
diff --git a/docs/decomposition/modules/documentation_and_implementation_alignment.md b/docs/decomposition/modules/documentation_and_implementation_alignment.md
index 2ec6ffa..44b97c6 100644
--- a/docs/decomposition/modules/documentation_and_implementation_alignment.md
+++ b/docs/decomposition/modules/documentation_and_implementation_alignment.md
@@ -58,7 +58,7 @@ Rows appear when work starts; default for unlisted modules is **Planned** / not
 | E3.M2 | Ready | **NEO-65 landed:** frozen prototype eight-recipe catalog in [`content/recipes/prototype_recipes.json`](../../../content/recipes/prototype_recipes.json); [`recipe-def.schema.json`](../../../content/schemas/recipe-def.schema.json) + [`recipe-io-row.schema.json`](../../../content/schemas/recipe-io-row.schema.json); PR gate + [`validate_content.py`](../../../scripts/validate_content.py) Slice 3 gates ([NEO-65](../../plans/NEO-65-implementation-plan.md)). **NEO-66 landed:** fail-fast server load of `content/recipes/*_recipes.json` at startup — `server/NeonSprawl.Server/Game/Crafting/` ([NEO-66](../../plans/NEO-66-implementation-plan.md)); [server README — Recipe catalog](../../../server/README.md#recipe-catalog-contentrecipes-neo-66). **NEO-67 landed:** injectable **`IRecipeDefinitionRegistry`** + lookup tests ([NEO-67](../../plans/NEO-67-implementation-plan.md)). **NEO-68 landed:** **`GET /game/world/recipe-definitions`** — `RecipeDefinitionsWorldApi` + DTOs in `Game/Crafting/` ([NEO-68](../../plans/NEO-68-implementation-plan.md), [`NEO-68` manual QA](../../manual-qa/NEO-68.md)); [server README — Recipe definitions (NEO-68)](../../../server/README.md#recipe-definitions-neo-68); Bruno `bruno/neon-sprawl-server/recipe-definitions/`. **NEO-69 landed:** **`CraftOperations.TryCraft`** + **`CraftResult`** — pre-flight inputs/outputs, inventory mutation, refine XP ([NEO-69](../../plans/NEO-69-implementation-plan.md)); [server README — Craft engine (NEO-69)](../../../server/README.md#craft-engine-neo-69-and-craft-http-neo-70). **NEO-70 landed:** **`POST /game/players/{id}/craft`** — `PlayerCraftApi` + wire **`CraftResponse`**; Bruno gather→refine→make spine ([NEO-70](../../plans/NEO-70-implementation-plan.md)); Bruno `bruno/neon-sprawl-server/craft/`. **NEO-71 landed:** comment-only **`item_crafted`** / **`craft_failed`** telemetry hook sites in **`CraftOperations.TryCraft`** ([NEO-71](../../plans/NEO-71-implementation-plan.md)); [server README — Craft telemetry hooks (NEO-71)](../../../server/README.md#craft-telemetry-hooks-neo-71). **NEO-42 landed (prep):** **`RefineActivitySkillXpGrant`** / **`RefineSkillXpConstants`** — wired from craft engine success path. Epic 3 Slice 3 server backlog **E3M2-01**–**E3M2-07** complete. Upstream: E3.M1 **Ready**, E3.M3 inventory landed. **NEO-74 landed:** client craft UI — **`recipe_definitions_client.gd`**, **`craft_client.gd`**, **`craft_recipe_panel.gd`**, **`CraftFeedbackLabel`**, **refine** skill row ([NEO-74](../../plans/NEO-74-implementation-plan.md), [`NEO-74` manual QA](../../manual-qa/NEO-74.md)); `client/README.md` craft section. **NEO-75 landed:** capstone playable gather→refine→make loop — [`NEO-75` manual QA](../../manual-qa/NEO-75.md), **`prototype_economy_hud_section.gd`**; Epic 3 Slice 5 client complete. | [NEO-42](../../plans/NEO-42-implementation-plan.md), [NEO-65](../../plans/NEO-65-implementation-plan.md), [NEO-66](../../plans/NEO-66-implementation-plan.md), [NEO-67](../../plans/NEO-67-implementation-plan.md), [NEO-68](../../plans/NEO-68-implementation-plan.md), [NEO-69](../../plans/NEO-69-implementation-plan.md), [NEO-70](../../plans/NEO-70-implementation-plan.md), [NEO-71](../../plans/NEO-71-implementation-plan.md), [NEO-74](../../plans/NEO-74-implementation-plan.md), [NEO-75](../../plans/NEO-75-implementation-plan.md), [E3M2-prototype-backlog](../../plans/E3M2-prototype-backlog.md), [E3S5-client-prototype-backlog](../../plans/E3S5-client-prototype-backlog.md), [E3_M2](E3_M2_RefinementAndRecipeExecution.md) |
 | E5.M1 | Ready | **NEO-76 landed:** frozen prototype four-ability catalog in [`content/abilities/prototype_abilities.json`](../../../content/abilities/prototype_abilities.json); [`ability-def.schema.json`](../../../content/schemas/ability-def.schema.json); PR gate + [`validate_content.py`](../../../scripts/validate_content.py) E5M1 four-id gate ([NEO-76](../../plans/NEO-76-implementation-plan.md)). **NEO-77 landed:** fail-fast server load of `content/abilities/*_abilities.json` at startup — `server/NeonSprawl.Server/Game/Combat/` ([NEO-77](../../plans/NEO-77-implementation-plan.md)); [server README — Ability catalog](../../../server/README.md#ability-catalog-contentabilities-neo-77). **NEO-79 landed:** injectable **`IAbilityDefinitionRegistry`** + DI; hotbar/cast use **`TryNormalizeKnown`** ([NEO-79](../../plans/NEO-79-implementation-plan.md)); Bruno `bruno/neon-sprawl-server/hotbar-loadout/` + `ability-cast/` unknown-ability deny smokes. **NEO-78 landed:** **`GET /game/world/ability-definitions`** — `AbilityDefinitionsWorldApi` + DTOs in `Game/Combat/` ([NEO-78](../../plans/NEO-78-implementation-plan.md)); [server README — Ability definitions (NEO-78)](../../../server/README.md#ability-definitions-neo-78); Bruno `bruno/neon-sprawl-server/ability-definitions/`. **NEO-80 landed:** **`ICombatEntityHealthStore`** / **`InMemoryCombatEntityHealthStore`** — lazy init (Slice 1 flat 100 HP; **superseded by [NEO-91](../../plans/NEO-91-implementation-plan.md)** per-archetype catalog max HP + three NPC instance ids); DI via **`AddCombatEntityHealthStore()`** ([NEO-80](../../plans/NEO-80-implementation-plan.md)); [server README — Combat entity health (NEO-80, NEO-91)](../../../server/README.md#combat-entity-health-neo-80-neo-91). **NEO-81 landed:** **`CombatOperations.TryResolve`** + **`CombatResult`** + **`CombatReasonCodes`** — defeated pre-check deny, catalog damage ([NEO-81](../../plans/NEO-81-implementation-plan.md)); [server README — Combat engine (NEO-81)](../../../server/README.md#combat-engine-neo-81). **NEO-82 landed:** **`AbilityCastApi`** → **`CombatOperations.TryResolve`**; nested wire **`combatResolution`** on accept; per-ability catalog cooldown; **`target_defeated`** cast deny ([NEO-82](../../plans/NEO-82-implementation-plan.md)); [server README — Ability cast (NEO-82)](../../../server/README.md#ability-cast-neo-31-neo-82); Bruno `bruno/neon-sprawl-server/ability-cast/` defeat spine. **NEO-83 landed:** **`GET /game/world/combat-targets`** — `CombatTargetsWorldApi` + DTOs; authoritative HP snapshot from **`ICombatEntityHealthStore`** ([NEO-83](../../plans/NEO-83-implementation-plan.md)); [server README — Combat targets snapshot (NEO-83)](../../../server/README.md#combat-targets-snapshot-neo-83); Bruno `bruno/neon-sprawl-server/combat-targets/`. **NEO-44 landed:** **`CombatDefeatGigXpGrant`** on cast **`targetDefeated`** — **25** gig XP to **`breach`** via **`IPlayerGigProgressionStore`** (V007); **`GET …/gig-progression`** ([NEO-44](../../plans/NEO-44-implementation-plan.md), [`NEO-44` manual QA](../../manual-qa/NEO-44.md)); [server README — Gig progression (NEO-44)](../../../server/README.md#gig-progression-snapshot-neo-44); Bruno `bruno/neon-sprawl-server/gig-progression/`. **NEO-84 landed:** comment-only **`ability_used`** / **`enemy_defeat`** telemetry hook sites in **`CombatOperations.TryResolve`**; reserved **`encounter_start`** / **`player_death`** ([NEO-84](../../plans/NEO-84-implementation-plan.md)); [server README — Combat telemetry hooks (NEO-84)](../../../server/README.md#combat-telemetry-hooks-neo-84). **NEO-85 landed:** client combat HUD — **`ability_cast_client.gd`** parses **`combatResolution`**; **`combat_targets_client.gd`**, **`CastFeedbackLabel`** resolution copy, **`CombatTargetHpLabel`**; event-driven GET refresh ([NEO-85](../../plans/NEO-85-implementation-plan.md), [`NEO-85` manual QA](../../manual-qa/NEO-85.md)); `client/README.md` combat HUD section. **NEO-86 landed:** playable combat capstone — **`gig_progression_client.gd`**, **`GigXpLabel`**, defeat-triggered gig GET refresh; capstone manual QA [`NEO-86`](../../manual-qa/NEO-86.md); `client/README.md` end-to-end combat loop section ([NEO-86](../../plans/NEO-86-implementation-plan.md)). **Epic 5 Slice 1 client capstone complete.** **Backlog decomposed:** Epic 5 Slice 1 — **E5M1-01**–**E5M1-12** landed. **Precursor landed:** E1.M4 cast funnel (NEO-28/31/32). | [E5M1-prototype-backlog.md](../../plans/E5M1-prototype-backlog.md), [E5_M1](E5_M1_CombatRulesEngine.md), [NEO-77](../../plans/NEO-77-implementation-plan.md), [NEO-79](../../plans/NEO-79-implementation-plan.md), [NEO-78](../../plans/NEO-78-implementation-plan.md), [NEO-80](../../plans/NEO-80-implementation-plan.md), [NEO-81](../../plans/NEO-81-implementation-plan.md), [NEO-82](../../plans/NEO-82-implementation-plan.md), [NEO-83](../../plans/NEO-83-implementation-plan.md), [NEO-44](../../plans/NEO-44-implementation-plan.md), [NEO-84](../../plans/NEO-84-implementation-plan.md), [NEO-85](../../plans/NEO-85-implementation-plan.md), [NEO-86](../../plans/NEO-86-implementation-plan.md), [E1M4-prototype-backlog.md](../../plans/E1M4-prototype-backlog.md) |
 | E5.M2 | Ready | **NEO-87 landed:** frozen prototype three-behavior catalog in [`content/npc-behaviors/prototype_npc_behaviors.json`](../../../content/npc-behaviors/prototype_npc_behaviors.json); [`npc-behavior-def.schema.json`](../../../content/schemas/npc-behavior-def.schema.json); PR gate + [`validate_content.py`](../../../scripts/validate_content.py) E5M2 three-id gate ([NEO-87](../../plans/NEO-87-implementation-plan.md)). **NEO-88 landed:** fail-fast server load of `content/npc-behaviors/*_npc_behaviors.json` at startup — `server/NeonSprawl.Server/Game/Npc/` ([NEO-88](../../plans/NEO-88-implementation-plan.md)); [server README — NPC behavior catalog](../../../server/README.md#npc-behavior-catalog-contentnpc-behaviors-neo-88). **NEO-89 landed:** injectable **`INpcBehaviorDefinitionRegistry`** + DI; **`PrototypeNpcBehaviorRegistry`** id constants ([NEO-89](../../plans/NEO-89-implementation-plan.md)). **NEO-90 landed:** **`GET /game/world/npc-behavior-definitions`** — `NpcBehaviorDefinitionsWorldApi` + DTOs in `Game/Npc/` ([NEO-90](../../plans/NEO-90-implementation-plan.md)); [server README — NPC behavior definitions (NEO-90)](../../../server/README.md#npc-behavior-definitions-neo-90); Bruno `bruno/neon-sprawl-server/npc-behavior-definitions/`. **NEO-91 landed:** **`PrototypeNpcRegistry`** + combat-target migration — three NPC instance ids replace alpha/beta; per-archetype max HP from behavior catalog ([NEO-91](../../plans/NEO-91-implementation-plan.md)); [server README — Combat entity health (NEO-91)](../../../server/README.md#combat-entity-health-neo-80-neo-91). **NEO-92 landed:** **`IThreatStateStore`** + **`AggroOperations`** — first-hit acquire on damaging cast, leash clear on move/cast; cast/move/fixture hooks ([NEO-92](../../plans/NEO-92-implementation-plan.md)); [server README — Threat / aggro state (NEO-92)](../../../server/README.md#threat--aggro-state-neo-92). **NEO-93 landed:** **`INpcRuntimeStateStore`** + **`NpcRuntimeOperations.AdvanceAll`** — catalog-driven behavior state machine, lazy tick advance with delta cap; dev fixture reset ([NEO-93](../../plans/NEO-93-implementation-plan.md)); [server README — NPC runtime behavior state (NEO-93)](../../../server/README.md#npc-runtime-behavior-state-neo-93). **NEO-94 landed:** **`GET /game/world/npc-runtime-snapshot`** — `NpcRuntimeSnapshotWorldApi` + DTOs; lazy **`AdvanceAll`** on poll; nested **`activeTelegraph`** with server-computed **`windupRemainingSeconds`** ([NEO-94](../../plans/NEO-94-implementation-plan.md)); [server README — NPC runtime snapshot (NEO-94)](../../../server/README.md#npc-runtime-snapshot-neo-94); Bruno `bruno/neon-sprawl-server/npc-runtime-snapshot/`. **NEO-95 landed:** **`IPlayerCombatHealthStore`** + **`NpcAttackOperations.TryResolveTelegraphComplete`** — telegraph resolve via behavior **`attackAbilityId`** + ability **`maxRange`** / **`baseDamage`** ([NEO-95](../../plans/NEO-95-implementation-plan.md), [NEO-98](../../plans/NEO-98-implementation-plan.md)); [server README — Session player combat HP (NEO-95)](../../../server/README.md#session-player-combat-hp-neo-95); Bruno `bruno/neon-sprawl-server/combat-health/`. **NEO-96 landed:** comment-only **`telegraph_fired`** + **`npc_state_transition`** hook sites in **`NpcRuntimeOperations.AdvanceAll`** ([NEO-96](../../plans/NEO-96-implementation-plan.md)); [server README — NPC runtime telemetry hooks (NEO-96)](../../../server/README.md#npc-runtime-telemetry-hooks-neo-96). **NEO-97 landed:** client telegraph HUD — **`npc_runtime_client.gd`**, **`player_combat_health_client.gd`**, **`npc_runtime_hud_state.gd`**, **`TelegraphLabel`** / **`NpcStateLabel`** / **`PlayerCombatHpLabel`**; combat-active ~1 Hz poll ([NEO-97](../../plans/NEO-97-implementation-plan.md), [`NEO-97` manual QA](../../manual-qa/NEO-97.md)); [client README — NPC runtime + telegraph HUD (NEO-97)](../../../client/README.md#npc-runtime--telegraph-hud-neo-97). **NEO-98 landed:** playable NPC telegraph combat capstone — [`NEO-98` manual QA](../../manual-qa/NEO-98.md); `client/README.md` end-to-end NPC telegraph combat loop section ([NEO-98](../../plans/NEO-98-implementation-plan.md)). **NEO-98 server integration:** defeat clears aggro/runtime (**`TryStopOnTargetDefeat`**); telegraph damage range-gated via [`prototype_npc_abilities.json`](../../../content/abilities/prototype_npc_abilities.json) + behavior **`attackAbilityId`**. **Epic 5 Slice 2 client capstone complete.** **Backlog decomposed:** Epic 5 Slice 2 — [E5M2-prototype-backlog.md](../../plans/E5M2-prototype-backlog.md) **E5M2-01** [NEO-87](https://linear.app/neon-sprawl/issue/NEO-87) → **E5M2-12** [NEO-98](https://linear.app/neon-sprawl/issue/NEO-98) **landed**. Three archetypes (`prototype_melee_pressure`, `prototype_ranged_control`, `prototype_elite_mini_boss`); replaces alpha/beta dummies with **`prototype_npc_melee` / `ranged` / `elite`**. Owns **`ThreatState`**, **`TelegraphEvent`**, **`GET …/npc-runtime-snapshot`**, session **`IPlayerCombatHealthStore`**. Upstream **E5.M1 Ready**. | [E5M2-prototype-backlog.md](../../plans/E5M2-prototype-backlog.md), [E5_M2](E5_M2_NpcAiAndBehaviorProfiles.md), [NEO-87](../../plans/NEO-87-implementation-plan.md), [NEO-88](../../plans/NEO-88-implementation-plan.md), [NEO-89](../../plans/NEO-89-implementation-plan.md), [NEO-90](../../plans/NEO-90-implementation-plan.md), [NEO-91](../../plans/NEO-91-implementation-plan.md), [NEO-92](../../plans/NEO-92-implementation-plan.md), [NEO-93](../../plans/NEO-93-implementation-plan.md), [NEO-94](../../plans/NEO-94-implementation-plan.md), [NEO-95](../../plans/NEO-95-implementation-plan.md), [NEO-96](../../plans/NEO-96-implementation-plan.md), [NEO-97](../../plans/NEO-97-implementation-plan.md), [NEO-98](../../plans/NEO-98-implementation-plan.md), label **`E5.M2`** on NEO-87–NEO-98 |
-| E5.M3 | In Progress | **Backlog decomposed:** Epic 5 Slice 3 — [E5M3-prototype-backlog.md](../../plans/E5M3-prototype-backlog.md) **E5M3-01** [NEO-100](https://linear.app/neon-sprawl/issue/NEO-100) → **E5M3-12** [NEO-111](https://linear.app/neon-sprawl/issue/NEO-111). Prototype spine: one encounter **`prototype_combat_pocket`** (defeat all three E5.M2 NPC ids) → reward table **`prototype_combat_pocket_clear`** (**`scrap_metal_bulk` ×10**, **`contract_handoff_token` ×1**); idempotent completion; per-defeat gig XP unchanged ([NEO-44](../../plans/NEO-44-implementation-plan.md)). **Implementation not started.** Upstream **E5.M2 Ready**, **E3.M3** inventory landed. | [E5M3-prototype-backlog.md](../../plans/E5M3-prototype-backlog.md), [E5_M3](E5_M3_EncounterAndRewardTables.md), label **`E5.M3`** on NEO-100–NEO-111 |
+| E5.M3 | In Progress | **E5M3-01 catalog landed ([NEO-100](https://linear.app/neon-sprawl/issue/NEO-100)):** encounter + reward-table schemas, `prototype_encounters.json`, `prototype_reward_tables.json`, CI gates. Epic 5 Slice 3 backlog [E5M3-prototype-backlog.md](../../plans/E5M3-prototype-backlog.md) **E5M3-01** [NEO-100](https://linear.app/neon-sprawl/issue/NEO-100) → **E5M3-12** [NEO-111](https://linear.app/neon-sprawl/issue/NEO-111). Prototype spine: **`prototype_combat_pocket`** → **`prototype_combat_pocket_clear`**; idempotent completion; per-defeat gig XP unchanged ([NEO-44](../../plans/NEO-44-implementation-plan.md)). **Server load/runtime (NEO-101+) not started.** Upstream **E5.M2 Ready**, **E3.M3** inventory landed. | [NEO-100 plan](../../plans/NEO-100-implementation-plan.md), [E5_M3](E5_M3_EncounterAndRewardTables.md), label **`E5.M3`** on NEO-100–NEO-111 |
 
 ---
 
diff --git a/docs/decomposition/modules/module_dependency_register.md b/docs/decomposition/modules/module_dependency_register.md
index 2dc8eef..9eb8abf 100644
--- a/docs/decomposition/modules/module_dependency_register.md
+++ b/docs/decomposition/modules/module_dependency_register.md
@@ -80,7 +80,7 @@ Fleshed-out scope, contracts, and integration notes live in **per-module documen
 
 **E5.M2 note:** Epic 5 **Slice 2** backlog in Linear ([Epic 5 — PvE Combat and Encounter Content](https://linear.app/neon-sprawl/project/epic-5-pve-combat-and-encounter-content-cf3c94c3-5346-40e0-8aaf-281e846f2846)): [NEO-87](https://linear.app/neon-sprawl/issue/NEO-87) → [NEO-98](https://linear.app/neon-sprawl/issue/NEO-98); label **`E5.M2`**. Client capstone **E5M2-12** [NEO-98](https://linear.app/neon-sprawl/issue/NEO-98). See [E5M2-prototype-backlog.md](../../plans/E5M2-prototype-backlog.md), [E5_M2_NpcAiAndBehaviorProfiles.md](E5_M2_NpcAiAndBehaviorProfiles.md). Upstream **E5.M1 Ready**. **NEO-87 landed:** frozen three-behavior catalog + CI ([NEO-87 plan](../../plans/NEO-87-implementation-plan.md)). **NEO-88 landed:** fail-fast server load of `content/npc-behaviors/*_npc_behaviors.json` ([NEO-88 plan](../../plans/NEO-88-implementation-plan.md)); [server README — NPC behavior catalog](../../../server/README.md#npc-behavior-catalog-contentnpc-behaviors-neo-88). **NEO-89 landed:** injectable **`INpcBehaviorDefinitionRegistry`** + DI ([NEO-89 plan](../../plans/NEO-89-implementation-plan.md)). **NEO-90 landed:** **`GET /game/world/npc-behavior-definitions`** — `NpcBehaviorDefinitionsWorldApi` + DTOs in `Game/Npc/` ([NEO-90 plan](../../plans/NEO-90-implementation-plan.md)); [server README — NPC behavior definitions (NEO-90)](../../../server/README.md#npc-behavior-definitions-neo-90); Bruno `bruno/neon-sprawl-server/npc-behavior-definitions/`. **NEO-91 landed:** **`PrototypeNpcRegistry`** + combat-target migration — three NPC instance ids, per-archetype catalog max HP ([NEO-91 plan](../../plans/NEO-91-implementation-plan.md)); [server README — Combat entity health (NEO-91)](../../../server/README.md#combat-entity-health-neo-80-neo-91). **NEO-92–NEO-96 landed:** aggro/threat, runtime state machine, **`GET …/npc-runtime-snapshot`**, player combat HP + NPC attack resolve, telemetry hooks ([NEO-92](../../plans/NEO-92-implementation-plan.md)–[NEO-96](../../plans/NEO-96-implementation-plan.md)). **NEO-97 landed:** client telegraph HUD ([NEO-97 plan](../../plans/NEO-97-implementation-plan.md), [`NEO-97` manual QA](../../manual-qa/NEO-97.md)). **NEO-98 landed:** playable NPC telegraph combat capstone ([NEO-98 plan](../../plans/NEO-98-implementation-plan.md), [`NEO-98` manual QA](../../manual-qa/NEO-98.md)); [client README — End-to-end NPC telegraph combat loop (NEO-98)](../../../client/README.md#end-to-end-npc-telegraph-combat-loop-neo-98). **Epic 5 Slice 2 complete — register row Ready.** Replaces **`prototype_target_alpha` / `beta`** with three NPC archetype instances; owns **`ThreatState`**, **`TelegraphEvent`**, session **`IPlayerCombatHealthStore`**.
 
-**E5.M3 note:** Epic 5 **Slice 3** backlog in Linear ([Epic 5 — PvE Combat and Encounter Content](https://linear.app/neon-sprawl/project/epic-5-pve-combat-and-encounter-content-cf3c94c3-5346-40e0-8aaf-281e846f2846)): [NEO-100](https://linear.app/neon-sprawl/issue/NEO-100) → [NEO-111](https://linear.app/neon-sprawl/issue/NEO-111); label **`E5.M3`**. Client capstone **E5M3-12** [NEO-111](https://linear.app/neon-sprawl/issue/NEO-111). See [E5M3-prototype-backlog.md](../../plans/E5M3-prototype-backlog.md), [E5_M3_EncounterAndRewardTables.md](E5_M3_EncounterAndRewardTables.md). Upstream **E5.M2 Ready**, **E3.M3** inventory landed. Prototype spine: one encounter **`prototype_combat_pocket`** (defeat all three E5.M2 NPC ids) → reward table **`prototype_combat_pocket_clear`** ( **`scrap_metal_bulk` ×10**, **`contract_handoff_token` ×1** ); idempotent completion per player; per-defeat gig XP unchanged ([NEO-44](../../plans/NEO-44-implementation-plan.md)). **Backlog decomposed** — implementation not started.
+**E5.M3 note:** Epic 5 **Slice 3** backlog in Linear ([Epic 5 — PvE Combat and Encounter Content](https://linear.app/neon-sprawl/project/epic-5-pve-combat-and-encounter-content-cf3c94c3-5346-40e0-8aaf-281e846f2846)): [NEO-100](https://linear.app/neon-sprawl/issue/NEO-100) → [NEO-111](https://linear.app/neon-sprawl/issue/NEO-111); label **`E5.M3`**. Client capstone **E5M3-12** [NEO-111](https://linear.app/neon-sprawl/issue/NEO-111). See [E5M3-prototype-backlog.md](../../plans/E5M3-prototype-backlog.md), [E5_M3_EncounterAndRewardTables.md](E5_M3_EncounterAndRewardTables.md). Upstream **E5.M2 Ready**, **E3.M3** inventory landed. Prototype spine: one encounter **`prototype_combat_pocket`** (defeat all three E5.M2 NPC ids) → reward table **`prototype_combat_pocket_clear`** ( **`scrap_metal_bulk` ×10**, **`contract_handoff_token` ×1** ); idempotent completion per player; per-defeat gig XP unchanged ([NEO-44](../../plans/NEO-44-implementation-plan.md)). **NEO-100 landed:** encounter + reward-table schemas, prototype catalogs, CI gates ([NEO-100 plan](../../plans/NEO-100-implementation-plan.md)). **Server load/runtime (NEO-101+) not started.**
 
 ### Epic 6 — PvP Security
 
diff --git a/docs/plans/E5M3-prototype-backlog.md b/docs/plans/E5M3-prototype-backlog.md
index da301ba..cedbee3 100644
--- a/docs/plans/E5M3-prototype-backlog.md
+++ b/docs/plans/E5M3-prototype-backlog.md
@@ -92,9 +92,11 @@ Working backlog for **Epic 5 — Slice 3** ([Epic 5 · Slice 3 — encounters an
 
 **Acceptance criteria**
 
-- [ ] PR gate validates encounter + reward-table JSON against schema.
-- [ ] Exactly one prototype encounter id and one reward table id; duplicate `id` fails CI.
-- [ ] Stable id list documented in module doc freeze box.
+- [x] PR gate validates encounter + reward-table JSON against schema.
+- [x] Exactly one prototype encounter id and one reward table id; duplicate `id` fails CI.
+- [x] Stable id list documented in module doc freeze box.
+
+**Landed ([NEO-100](https://linear.app/neon-sprawl/issue/NEO-100)):** encounter + reward-table schemas, `prototype_encounters.json`, `prototype_reward_tables.json`, CI gates in `validate_content.py`; plan [NEO-100-implementation-plan.md](NEO-100-implementation-plan.md).
 
 ---
 
diff --git a/docs/plans/NEO-100-implementation-plan.md b/docs/plans/NEO-100-implementation-plan.md
new file mode 100644
index 0000000..4bc1b62
--- /dev/null
+++ b/docs/plans/NEO-100-implementation-plan.md
@@ -0,0 +1,174 @@
+# NEO-100 — Implementation plan
+
+## Story reference
+
+| Field | Value |
+|--------|--------|
+| **Key** | NEO-100 |
+| **Title** | E5M3-01: Prototype EncounterDef + RewardTable catalog + schemas + CI |
+| **Linear** | https://linear.app/neon-sprawl/issue/NEO-100/e5m3-01-prototype-encounterdef-rewardtable-catalog-schemas-ci |
+| **Module** | [E5.M3 — EncounterAndRewardTables](../decomposition/modules/E5_M3_EncounterAndRewardTables.md) · Epic 5 Slice 3 · backlog **E5M3-01** |
+| **Branch** | `NEO-100-e5m3-encounter-reward-catalog-schemas-ci` |
+| **Precursor** | [E5.M2](../decomposition/modules/E5_M2_NpcAiAndBehaviorProfiles.md) **Ready** (three NPC instance ids) · [E3.M3](../decomposition/modules/E3_M3_ItemizationAndInventorySchema.md) **Ready** (frozen item catalog incl. **`contract_handoff_token`**) |
+| **Pattern** | [NEO-87](https://linear.app/neon-sprawl/issue/NEO-87) — row JSON Schema + catalog envelope + `scripts/validate_content.py` gate |
+| **Blocks** | [NEO-101](https://linear.app/neon-sprawl/issue/NEO-101) — server encounter + reward catalog load |
+
+## Kickoff clarifications
+
+**No clarifications needed.** Scope, frozen ids, loot grants, completion rule, and cross-ref targets are fully specified in [E5M3 kickoff decisions](E5M3-prototype-backlog.md#kickoff-decisions-decomposition-defaults), [E5.M3 freeze table](../decomposition/modules/E5_M3_EncounterAndRewardTables.md#prototype-slice-3-freeze-e5m3-01), and `content/README.md` (NEO-100 paragraph already present from E5M3 decomposition). Catalog envelope and CI constant naming follow NEO-87 / NEO-76 precedent without ambiguity.
+
+| Topic | Question | Agent recommendation | Answer |
+|--------|----------|----------------------|--------|
+| — | — | — | **No blocking decisions** (see above). |
+
+## Goal, scope, and out-of-scope
+
+**Goal:** Lock content shape and CI validation for **one** frozen `EncounterDef` + **one** frozen `RewardTable` before server load (NEO-101+).
+
+**In scope (from Linear + [E5M3-01](E5M3-prototype-backlog.md#e5m3-01--prototype-encounterdef--rewardtable-catalog--schemas--ci)):**
+
+- `content/schemas/encounter-def.schema.json`, `content/schemas/reward-table.schema.json`, `content/schemas/reward-grant-row.schema.json`.
+- `content/encounters/prototype_encounters.json` — one row **`prototype_combat_pocket`**.
+- `content/reward-tables/prototype_reward_tables.json` — one row **`prototype_combat_pocket_clear`**.
+- `scripts/validate_content.py` — schema validation, duplicate `id`, one-encounter / one-table allowlists, cross-ref **`itemId`** → frozen item catalog, **`requiredNpcInstanceIds`** → three E5.M2 NPC instance ids, **`rewardTableId`** → reward table ids.
+- Designer note / CI rules line in [E5_M3](../decomposition/modules/E5_M3_EncounterAndRewardTables.md) + **CT.M1** PR gate paragraph.
+- `documentation_and_implementation_alignment.md` E5.M3 row → note NEO-100 catalog in progress / landed.
+
+**Out of scope (from Linear):**
+
+- Server loader, runtime engine, HTTP, Godot (NEO-101+).
+- **`IEncounterProgressStore`**, completion events, inventory grant (E5M3-04+).
+- **Client counterpart:** none — server-only content + CI; player-visible work starts at E5M3-08+ / [NEO-110](https://linear.app/neon-sprawl/issue/NEO-110) / [NEO-111](https://linear.app/neon-sprawl/issue/NEO-111).
+
+## Acceptance criteria checklist
+
+- [x] PR gate validates encounter + reward-table JSON against schema.
+- [x] Exactly one prototype encounter id and one reward table id; duplicate `id` fails CI.
+- [x] Stable id list documented in module doc freeze box.
+
+## Implementation reconciliation (shipped)
+
+- **Schemas:** [`encounter-def.schema.json`](../../content/schemas/encounter-def.schema.json), [`reward-table.schema.json`](../../content/schemas/reward-table.schema.json), [`reward-grant-row.schema.json`](../../content/schemas/reward-grant-row.schema.json).
+- **Catalogs:** [`prototype_encounters.json`](../../content/encounters/prototype_encounters.json), [`prototype_reward_tables.json`](../../content/reward-tables/prototype_reward_tables.json).
+- **CI:** `PROTOTYPE_E5M3_ENCOUNTER_IDS`, `PROTOTYPE_E5M3_REWARD_TABLE_IDS`, `PROTOTYPE_E5M2_NPC_INSTANCE_IDS`, `PROTOTYPE_E5M3_REWARD_GRANTS` gates in [`validate_content.py`](../../scripts/validate_content.py); duplicate **`fixedGrants[].itemId`** rejected per reward table; **`requiredNpcInstanceIds`** schema **`uniqueItems`**.
+- **Docs:** E5.M3 CI enforcement line, CT.M1, alignment register, module dependency register, E5M3-01 backlog checkboxes.
+- **`content/README.md`:** verified against shipped ids and cross-ref rules — no edit required (paragraph pre-landed in E5M3 decomposition).
+
+## Technical approach
+
+1. **`reward-grant-row.schema.json`:** Mirror [`recipe-io-row.schema.json`](../../content/schemas/recipe-io-row.schema.json) — required **`itemId`** (pattern `^[a-z][a-z0-9_]*$`), **`quantity`** integer ≥ 1.
+
+2. **`reward-table.schema.json`:** Draft 2020-12 object; `additionalProperties: false`. Required: **`id`**, **`displayName`**, **`fixedGrants`** (non-empty array of `$ref` reward-grant-row). `id` pattern same as other catalogs.
+
+3. **`encounter-def.schema.json`:** Required: **`id`**, **`displayName`**, **`completionCriteria`**, **`requiredNpcInstanceIds`**, **`rewardTableId`**. **`completionCriteria`:** object with required **`kind`** enum **`defeat_all_targets`** only (prototype). **`requiredNpcInstanceIds`:** array of 3 strings (pattern), **`minItems`/`maxItems`: 3**. **`rewardTableId`:** string pattern.
+
+4. **Catalog files:**
+
+   **`content/reward-tables/prototype_reward_tables.json`**
+
+   ```json
+   {
+     "schemaVersion": 1,
+     "rewardTables": [
+       {
+         "id": "prototype_combat_pocket_clear",
+         "displayName": "Prototype Combat Pocket Clear",
+         "fixedGrants": [
+           { "itemId": "scrap_metal_bulk", "quantity": 10 },
+           { "itemId": "contract_handoff_token", "quantity": 1 }
+         ]
+       }
+     ]
+   }
+   ```
+
+   **`content/encounters/prototype_encounters.json`**
+
+   ```json
+   {
+     "schemaVersion": 1,
+     "encounters": [
+       {
+         "id": "prototype_combat_pocket",
+         "displayName": "Prototype Combat Pocket",
+         "completionCriteria": { "kind": "defeat_all_targets" },
+         "requiredNpcInstanceIds": [
+           "prototype_npc_melee",
+           "prototype_npc_ranged",
+           "prototype_npc_elite"
+         ],
+         "rewardTableId": "prototype_combat_pocket_clear"
+       }
+     ]
+   }
+   ```
+
+   **`requiredNpcInstanceIds`** order matches [E5.M3 freeze table](../decomposition/modules/E5_M3_EncounterAndRewardTables.md#prototype-slice-3-freeze-e5m3-01) (melee → ranged → elite); CI enforces **set equality** with `PROTOTYPE_E5M2_NPC_INSTANCE_IDS`, not order-sensitive beyond schema min/max 3.
+
+5. **`validate_content.py` constants (keep in sync with E5.M3 module doc + future NEO-101 loader):**
+
+   | Constant | Value |
+   |----------|--------|
+   | `PROTOTYPE_E5M3_ENCOUNTER_IDS` | `{ "prototype_combat_pocket" }` |
+   | `PROTOTYPE_E5M3_REWARD_TABLE_IDS` | `{ "prototype_combat_pocket_clear" }` |
+   | `PROTOTYPE_E5M2_NPC_INSTANCE_IDS` | `{ "prototype_npc_melee", "prototype_npc_ranged", "prototype_npc_elite" }` |
+
+6. **`validate_content.py` validators:**
+
+   - Add schema paths + dirs: `ENCOUNTER_DEF_SCHEMA`, `REWARD_TABLE_SCHEMA`, `REWARD_GRANT_ROW_SCHEMA`, `ENCOUNTERS_DIR`, `REWARD_TABLES_DIR`.
+   - **`_validate_reward_table_catalogs`:** envelope `schemaVersion: 1`, top-level **`rewardTables`** array; validate each row; track `seen_ids`; reject duplicates across files.
+   - **`_prototype_e5m3_reward_table_gate`:** ids must equal `PROTOTYPE_E5M3_REWARD_TABLE_IDS`.
+   - **`_prototype_e5m3_reward_grant_item_gate`:** each `fixedGrants[].itemId` ∈ `PROTOTYPE_SLICE1_ITEM_IDS`; quantities ≥ 1 (schema) — spot-check **`scrap_metal_bulk` ×10** and **`contract_handoff_token` ×1** in gate or integration-style assert in docstring test notes.
+   - **`_validate_encounter_catalogs`:** envelope `schemaVersion: 1`, top-level **`encounters`** array; validate rows; duplicate `id` rejection.
+   - **`_prototype_e5m3_encounter_gate`:** ids must equal `PROTOTYPE_E5M3_ENCOUNTER_IDS`.
+   - **`_prototype_e5m3_encounter_cross_ref_gate`:** each row's **`requiredNpcInstanceIds`** set must equal `PROTOTYPE_E5M2_NPC_INSTANCE_IDS`; **`rewardTableId`** must exist in reward-table `seen_ids`.
+   - Run **reward tables before encounters** in `main()` (encounters reference reward table ids).
+   - Extend module docstring, startup schema file checks, success summary with encounter + reward-table file/id counts.
+
+7. **Docs:**
+
+   - `E5_M3_EncounterAndRewardTables.md` — add CI enforcement line under freeze table (ids + cross-ref rules); link to this plan when complete.
+   - `CT_M1_ContentValidationPipeline.md` — encounter + reward-table PR gate paragraph.
+   - `documentation_and_implementation_alignment.md` — E5.M3 row notes NEO-100 catalog when complete.
+   - `content/README.md` — table rows for `encounters/` and `reward-tables/` already present; verify paragraph matches shipped constants after implementation.
+   - `E5M3-prototype-backlog.md` — E5M3-01 checkboxes when implementation completes.
+
+8. **No server/C#/client changes** in this story.
+
+## Files to add
+
+| Path | Purpose |
+|------|---------|
+| `content/schemas/reward-grant-row.schema.json` | JSON Schema for a single fixed-grant row on a `RewardTable`. |
+| `content/schemas/reward-table.schema.json` | JSON Schema for a single `RewardTable` row (uses reward-grant-row). |
+| `content/schemas/encounter-def.schema.json` | JSON Schema for a single `EncounterDef` row. |
+| `content/reward-tables/prototype_reward_tables.json` | Prototype one-table catalog (`schemaVersion` + `rewardTables` array). |
+| `content/encounters/prototype_encounters.json` | Prototype one-encounter catalog (`schemaVersion` + `encounters` array). |
+| `docs/plans/NEO-100-implementation-plan.md` | This plan. |
+
+## Files to modify
+
+| Path | Rationale |
+|------|-----------|
+| `scripts/validate_content.py` | Load/validate encounter + reward-table catalogs; duplicate `id`; E5M3 one-id gates; NPC instance + item + rewardTableId cross-refs; success summary. |
+| `docs/decomposition/modules/E5_M3_EncounterAndRewardTables.md` | CI enforcement note under freeze table; link to plan when complete. |
+| `docs/decomposition/modules/CT_M1_ContentValidationPipeline.md` | PR gate paragraph for encounter + reward-table catalog validation. |
+| `docs/decomposition/modules/documentation_and_implementation_alignment.md` | E5.M3 / NEO-100 status after catalog lands. |
+
+## Tests
+
+| Item | Coverage |
+|------|----------|
+| **CI / PR gate** | `.github/workflows/pr-gate.yml` runs `python scripts/validate_content.py` — extended script is the primary regression signal. |
+| **Manual negative cases** | From repo root after implementation: (1) duplicate encounter or reward-table `id` → non-zero exit; (2) remove frozen id → gate error; (3) unknown `itemId` in `fixedGrants` → cross-ref error; (4) wrong NPC instance id set → cross-ref error; (5) broken `rewardTableId` on encounter → cross-ref error; (6) empty `displayName` or invalid `completionCriteria.kind` → schema error. |
+| **Manual happy path** | `pip install -r scripts/requirements-content.txt && python3 scripts/validate_content.py` — reports encounter + reward-table catalogs + existing catalogs OK. |
+
+No dedicated pytest module in-repo today (same as NEO-87 / NEO-76).
+
+## Open questions / risks
+
+| Question / risk | Agent recommendation | Status |
+|-----------------|----------------------|--------|
+| NPC instance ids are server-registry constants, not content rows | **`PROTOTYPE_E5M2_NPC_INSTANCE_IDS` frozenset in CI** — mirror server `PrototypeNpcRegistry`; document sync obligation in module doc (same pattern as behavior ids without a content file). | **adopted** |
+| `content/README.md` pre-documents NEO-100 before catalogs land | **Keep paragraph; verify constants match after ship** — decomposition already merged. | **adopted** |
+| Cursor markdown `#anchor` deep links | Unrelated to this story; GitHub + stable ids remain source of truth. | **deferred** |
diff --git a/docs/reviews/2026-05-30-NEO-100.md b/docs/reviews/2026-05-30-NEO-100.md
new file mode 100644
index 0000000..30e7e86
--- /dev/null
+++ b/docs/reviews/2026-05-30-NEO-100.md
@@ -0,0 +1,60 @@
+# Code review — NEO-100 (E5M3-01)
+
+**Date:** 2026-05-30  
+**Scope:** Branch `NEO-100-e5m3-encounter-reward-catalog-schemas-ci` vs `cb86645` (merge-base on `main`) — commits `4f16c84` … `ee5e1a0`  
+**Base:** `cb86645` (main after PR #138)
+
+## Verdict
+
+**Approve** — review follow-up applied (2026-05-30).
+
+## Summary
+
+NEO-100 delivers the **E5M3-01** content spine: three JSON Schemas (`encounter-def`, `reward-table`, `reward-grant-row`), prototype catalog files with the frozen **`prototype_combat_pocket`** encounter and **`prototype_combat_pocket_clear`** reward table, and **`scripts/validate_content.py`** extensions mirroring the NEO-87 / NEO-76 catalog pattern (schema validation, duplicate `id` rejection, prototype id allowlists, item / NPC instance / reward-table cross-refs, reward-table-before-encounter ordering). Documentation updates match the shipped artifacts. Review follow-ups (dependency register sync, duplicate `fixedGrants` rejection, `uniqueItems` on NPC ids, plan audit note) are **Done.**
+
+## Documentation checked
+
+| Path | Result |
+|------|--------|
+| `docs/plans/NEO-100-implementation-plan.md` | **Matches** — scope, constants, file list, acceptance checklist, and implementation reconciliation align with the diff. |
+| `docs/plans/E5M3-prototype-backlog.md` (E5M3-01) | **Matches** — three AC items checked; landed note cites schemas, catalogs, and CI gates. |
+| `docs/decomposition/modules/E5_M3_EncounterAndRewardTables.md` | **Matches** — CI enforcement paragraph under freeze table; ids and cross-ref rules match `validate_content.py` constants. |
+| `docs/decomposition/modules/CT_M1_ContentValidationPipeline.md` | **Matches** — reward-table and encounter catalog paragraphs added with correct schema paths and gate semantics. |
+| `docs/decomposition/modules/documentation_and_implementation_alignment.md` | **Matches** — E5.M3 row notes **NEO-100 catalog landed**; server load still outstanding. |
+| `docs/decomposition/modules/module_dependency_register.md` | **Matches** — E5.M3 note cites **NEO-100 catalog landed**; server load still outstanding. |
+| `content/README.md` | **Matches** — NEO-100 paragraph and table rows for `encounters/` / `reward-tables/` match shipped ids and cross-ref rules (plan “verify only”). |
+| Full-stack epic decomposition | **N/A** — plan explicitly excludes client counterpart until E5M3-08+ / NEO-110 / NEO-111; no player-visible claim in this story. |
+| `server/NeonSprawl.Server/Game/Npc/PrototypeNpcRegistry.cs` | **Matches** (cross-ref) — CI `PROTOTYPE_E5M2_NPC_INSTANCE_IDS` matches server constants (`prototype_npc_melee`, `prototype_npc_ranged`, `prototype_npc_elite`). |
+
+## Blocking issues
+
+None.
+
+## Suggestions
+
+1. ~~**Update `module_dependency_register.md` E5.M3 note** — Replace “implementation not started” with **E5M3-01 / NEO-100 catalog landed** (schemas + CI); server load/runtime still NEO-101+. Keeps register consistent with `documentation_and_implementation_alignment.md` and E5.M3 module doc.~~ **Done.**
+
+2. ~~**Duplicate `fixedGrants` rows** — `_prototype_e5m3_reward_grant_content_gate` folds grants into a dict (last row wins). Duplicate `itemId` rows that merge to the frozen quantities **pass CI** (verified locally). For NEO-101 loader clarity, consider rejecting duplicate `itemId` in `fixedGrants` (schema `uniqueItems` on a composite key is awkward; a small loop in the grant gate matches mastery `perkId` duplicate rejection). Same pattern gap exists on recipe I/O rows — optional to defer until roster expansion.~~ **Done.** `_validate_reward_table_catalogs` rejects duplicate **`itemId`** per table; E5.M3 + CT.M1 docs updated. Recipe I/O duplicate deferral unchanged.
+
+## Nits
+
+- ~~Nit: **`requiredNpcInstanceIds`** schema omits `uniqueItems: true`; the set-equality gate catches wrong sets for the one-row prototype, but adding `uniqueItems` would fail fast on duplicate ids before the custom gate (and documents intent for NEO-101).~~ **Done.**
+
+- ~~Nit: Plan item 7 lists **`content/README.md` verify** — reconciliation section could explicitly note “verified, no edit required” for audit trail (optional).~~ **Done.**
+
+## Verification
+
+```bash
+# Primary regression (also runs in PR gate)
+python3 scripts/validate_content.py
+
+# Manual negative spot-checks (from plan)
+# 1. Duplicate encounter or reward-table id → non-zero exit
+# 2. Remove frozen id from catalog → gate error
+# 3. Unknown itemId in fixedGrants → cross-ref error
+# 4. Wrong requiredNpcInstanceIds set → cross-ref error
+# 5. Broken rewardTableId → cross-ref error
+# 6. Invalid completionCriteria.kind or empty displayName → schema error
+```
+
+**Before merge:** Confirm PR gate green on the branch (`validate_content.py` is the sole automated test surface for this story).
diff --git a/scripts/validate_content.py b/scripts/validate_content.py
index ceff4b0..13d68fc 100644
--- a/scripts/validate_content.py
+++ b/scripts/validate_content.py
@@ -12,6 +12,8 @@ Validates:
 - recipe catalogs: content/recipes/*_recipes.json rows vs content/schemas/recipe-def.schema.json (NEO-65)
 - ability catalogs: content/abilities/*_abilities.json rows vs content/schemas/ability-def.schema.json (NEO-76)
 - npc behavior catalogs: content/npc-behaviors/*_npc_behaviors.json rows vs content/schemas/npc-behavior-def.schema.json (NEO-87)
+- reward table catalogs: content/reward-tables/*_reward_tables.json rows vs content/schemas/reward-table.schema.json (NEO-100)
+- encounter catalogs: content/encounters/*_encounters.json rows vs content/schemas/encounter-def.schema.json (NEO-100)
 """
 
 from __future__ import annotations
@@ -34,6 +36,9 @@ RECIPE_IO_ROW_SCHEMA = REPO_ROOT / "content/schemas/recipe-io-row.schema.json"
 RECIPE_SCHEMA = REPO_ROOT / "content/schemas/recipe-def.schema.json"
 ABILITY_SCHEMA = REPO_ROOT / "content/schemas/ability-def.schema.json"
 NPC_BEHAVIOR_SCHEMA = REPO_ROOT / "content/schemas/npc-behavior-def.schema.json"
+REWARD_GRANT_ROW_SCHEMA = REPO_ROOT / "content/schemas/reward-grant-row.schema.json"
+REWARD_TABLE_SCHEMA = REPO_ROOT / "content/schemas/reward-table.schema.json"
+ENCOUNTER_DEF_SCHEMA = REPO_ROOT / "content/schemas/encounter-def.schema.json"
 SKILLS_DIR = REPO_ROOT / "content/skills"
 MASTERY_DIR = REPO_ROOT / "content/mastery"
 ITEMS_DIR = REPO_ROOT / "content/items"
@@ -41,6 +46,8 @@ RESOURCE_NODES_DIR = REPO_ROOT / "content/resource-nodes"
 RECIPES_DIR = REPO_ROOT / "content/recipes"
 ABILITIES_DIR = REPO_ROOT / "content/abilities"
 NPC_BEHAVIORS_DIR = REPO_ROOT / "content/npc-behaviors"
+REWARD_TABLES_DIR = REPO_ROOT / "content/reward-tables"
+ENCOUNTERS_DIR = REPO_ROOT / "content/encounters"
 
 # Slice 1 prototype lock (NEO-33): exact ids + category coverage after schema passes.
 PROTOTYPE_SLICE1_SKILL_IDS = frozenset({"salvage", "refine", "intrusion"})
@@ -126,6 +133,25 @@ PROTOTYPE_E5M2_NPC_BEHAVIOR_IDS = frozenset(
     }
 )
 
+# Epic 5 Slice 2 NPC instance ids (server PrototypeNpcRegistry); CI cross-ref only (NEO-100).
+PROTOTYPE_E5M2_NPC_INSTANCE_IDS = frozenset(
+    {
+        "prototype_npc_melee",
+        "prototype_npc_ranged",
+        "prototype_npc_elite",
+    }
+)
+
+# Epic 5 Slice 3 prototype lock (NEO-100): exact encounter + reward table ids after schema passes.
+PROTOTYPE_E5M3_ENCOUNTER_IDS = frozenset({"prototype_combat_pocket"})
+PROTOTYPE_E5M3_REWARD_TABLE_IDS = frozenset({"prototype_combat_pocket_clear"})
+
+# Frozen fixed grants for prototype_combat_pocket_clear (keep in sync with E5.M3 freeze table).
+PROTOTYPE_E5M3_REWARD_GRANTS: dict[str, int] = {
+    "scrap_metal_bulk": 10,
+    "contract_handoff_token": 1,
+}
+
 
 def _prototype_slice1_gate(seen_ids: dict[str, str], id_to_category: dict[str, str]) -> str | None:
     """Return a human-readable error if Slice 1 contract fails, else None."""
@@ -592,6 +618,211 @@ def _prototype_e5m2_npc_behavior_attack_ability_gate(
     return None
 
 
+def _reward_table_def_validator() -> Draft202012Validator:
+    """Build a validator that resolves reward-table $ref to reward-grant-row schema."""
+    grant_schema = json.loads(REWARD_GRANT_ROW_SCHEMA.read_text(encoding="utf-8"))
+    table_schema = json.loads(REWARD_TABLE_SCHEMA.read_text(encoding="utf-8"))
+    registry = Registry().with_resources(
+        [
+            (table_schema["$id"], Resource.from_contents(table_schema)),
+            (grant_schema["$id"], Resource.from_contents(grant_schema)),
+        ]
+    )
+    return Draft202012Validator(table_schema, registry=registry)
+
+
+def _validate_reward_table_catalogs(
+    *,
+    reward_table_files: list[Path],
+    reward_table_validator: Draft202012Validator,
+    known_item_ids: frozenset[str],
+) -> tuple[int, dict[str, str], dict[str, dict]]:
+    """Validate reward table JSON files. Returns (error_count, seen_ids, id_to_row)."""
+    errors = 0
+    seen_ids: dict[str, str] = {}
+    id_to_row: dict[str, dict] = {}
+
+    for path in reward_table_files:
+        rel = str(path.relative_to(REPO_ROOT))
+        data = json.loads(path.read_text(encoding="utf-8"))
+        schema_version = data.get("schemaVersion")
+        if schema_version != 1:
+            print(f"error: {rel}: expected schemaVersion 1, got {schema_version!r}", file=sys.stderr)
+            errors += 1
+            continue
+
+        reward_tables = data.get("rewardTables")
+        if not isinstance(reward_tables, list):
+            print(f"error: {rel}: expected top-level 'rewardTables' array", file=sys.stderr)
+            errors += 1
+            continue
+
+        for i, row in enumerate(reward_tables):
+            if not isinstance(row, dict):
+                print(f"error: {rel}: rewardTables[{i}] must be an object", file=sys.stderr)
+                errors += 1
+                continue
+            row_schema_errors = 0
+            for err in sorted(reward_table_validator.iter_errors(row), key=lambda e: e.path):
+                loc = ".".join(str(p) for p in err.path) or "(root)"
+                print(f"error: {rel} rewardTables[{i}] {loc}: {err.message}", file=sys.stderr)
+                row_schema_errors += 1
+                errors += 1
+            rid = row.get("id")
+            if isinstance(rid, str) and row_schema_errors == 0:
+                prev = seen_ids.get(rid)
+                if prev:
+                    print(f"error: duplicate reward table id {rid!r} in {prev} and {rel}", file=sys.stderr)
+                    errors += 1
+                else:
+                    seen_ids[rid] = rel
+                    id_to_row[rid] = row
+                fixed_grants = row.get("fixedGrants")
+                if isinstance(fixed_grants, list) and row_schema_errors == 0:
+                    seen_grant_item_ids: set[str] = set()
+                    for j, grant in enumerate(fixed_grants):
+                        if not isinstance(grant, dict):
+                            continue
+                        item_id = grant.get("itemId")
+                        if isinstance(item_id, str):
+                            if item_id in seen_grant_item_ids:
+                                print(
+                                    f"error: {rel} rewardTables[{i}].fixedGrants[{j}]: "
+                                    f"duplicate itemId {item_id!r}",
+                                    file=sys.stderr,
+                                )
+                                errors += 1
+                            else:
+                                seen_grant_item_ids.add(item_id)
+                            if item_id not in known_item_ids:
+                                print(
+                                    f"error: {rel} rewardTables[{i}].fixedGrants[{j}]: itemId {item_id!r} "
+                                    "is not in item catalogs",
+                                    file=sys.stderr,
+                                )
+                                errors += 1
+
+    return errors, seen_ids, id_to_row
+
+
+def _prototype_e5m3_reward_table_gate(seen_ids: dict[str, str]) -> str | None:
+    """Return a human-readable error if E5M3 reward table contract fails, else None."""
+    ids = frozenset(seen_ids.keys())
+    if ids != PROTOTYPE_E5M3_REWARD_TABLE_IDS:
+        return (
+            "error: prototype E5M3 expects exactly reward table ids "
+            f"{sorted(PROTOTYPE_E5M3_REWARD_TABLE_IDS)!r}, got {sorted(ids)!r}"
+        )
+    return None
+
+
+def _prototype_e5m3_reward_grant_content_gate(id_to_row: dict[str, dict]) -> str | None:
+    """Return a human-readable error if frozen grant quantities fail, else None."""
+    row = id_to_row.get("prototype_combat_pocket_clear")
+    if row is None:
+        return None
+    fixed_grants = row.get("fixedGrants")
+    if not isinstance(fixed_grants, list):
+        return None
+    grants: dict[str, int] = {}
+    for grant in fixed_grants:
+        if not isinstance(grant, dict):
+            continue
+        item_id = grant.get("itemId")
+        quantity = grant.get("quantity")
+        if isinstance(item_id, str) and isinstance(quantity, int):
+            grants[item_id] = quantity
+    if grants != PROTOTYPE_E5M3_REWARD_GRANTS:
+        return (
+            "error: prototype_combat_pocket_clear fixedGrants must match "
+            f"{PROTOTYPE_E5M3_REWARD_GRANTS!r}, got {grants!r}"
+        )
+    return None
+
+
+def _validate_encounter_catalogs(
+    *,
+    encounter_files: list[Path],
+    encounter_validator: Draft202012Validator,
+    known_reward_table_ids: frozenset[str],
+) -> tuple[int, dict[str, str], dict[str, dict]]:
+    """Validate encounter JSON files. Returns (error_count, seen_ids, id_to_row)."""
+    errors = 0
+    seen_ids: dict[str, str] = {}
+    id_to_row: dict[str, dict] = {}
+
+    for path in encounter_files:
+        rel = str(path.relative_to(REPO_ROOT))
+        data = json.loads(path.read_text(encoding="utf-8"))
+        schema_version = data.get("schemaVersion")
+        if schema_version != 1:
+            print(f"error: {rel}: expected schemaVersion 1, got {schema_version!r}", file=sys.stderr)
+            errors += 1
+            continue
+
+        encounters = data.get("encounters")
+        if not isinstance(encounters, list):
+            print(f"error: {rel}: expected top-level 'encounters' array", file=sys.stderr)
+            errors += 1
+            continue
+
+        for i, row in enumerate(encounters):
+            if not isinstance(row, dict):
+                print(f"error: {rel}: encounters[{i}] must be an object", file=sys.stderr)
+                errors += 1
+                continue
+            row_schema_errors = 0
+            for err in sorted(encounter_validator.iter_errors(row), key=lambda e: e.path):
+                loc = ".".join(str(p) for p in err.path) or "(root)"
+                print(f"error: {rel} encounters[{i}] {loc}: {err.message}", file=sys.stderr)
+                row_schema_errors += 1
+                errors += 1
+            eid = row.get("id")
+            if isinstance(eid, str) and row_schema_errors == 0:
+                prev = seen_ids.get(eid)
+                if prev:
+                    print(f"error: duplicate encounter id {eid!r} in {prev} and {rel}", file=sys.stderr)
+                    errors += 1
+                else:
+                    seen_ids[eid] = rel
+                    id_to_row[eid] = row
+                reward_table_id = row.get("rewardTableId")
+                if isinstance(reward_table_id, str) and reward_table_id not in known_reward_table_ids:
+                    print(
+                        f"error: {rel} encounters[{i}]: rewardTableId {reward_table_id!r} "
+                        "is not in reward table catalogs",
+                        file=sys.stderr,
+                    )
+                    errors += 1
+
+    return errors, seen_ids, id_to_row
+
+
+def _prototype_e5m3_encounter_gate(seen_ids: dict[str, str]) -> str | None:
+    """Return a human-readable error if E5M3 encounter contract fails, else None."""
+    ids = frozenset(seen_ids.keys())
+    if ids != PROTOTYPE_E5M3_ENCOUNTER_IDS:
+        return (
+            "error: prototype E5M3 expects exactly encounter ids "
+            f"{sorted(PROTOTYPE_E5M3_ENCOUNTER_IDS)!r}, got {sorted(ids)!r}"
+        )
+    return None
+
+
+def _prototype_e5m3_encounter_cross_ref_gate(id_to_row: dict[str, dict]) -> str | None:
+    """Return a human-readable error if NPC instance or reward table cross-refs fail, else None."""
+    for eid, row in id_to_row.items():
+        npc_ids = row.get("requiredNpcInstanceIds")
+        if isinstance(npc_ids, list):
+            npc_set = frozenset(str(x) for x in npc_ids if isinstance(x, str))
+            if npc_set != PROTOTYPE_E5M2_NPC_INSTANCE_IDS:
+                return (
+                    f"error: encounter {eid!r}: requiredNpcInstanceIds must be exactly "
+                    f"{sorted(PROTOTYPE_E5M2_NPC_INSTANCE_IDS)!r}, got {sorted(npc_set)!r}"
+                )
+    return None
+
+
 def _prototype_slice4_gate(track_skill_ids: list[str]) -> str | None:
     """Return a human-readable error if Slice 4 contract fails, else None."""
     if len(track_skill_ids) != 1:
@@ -918,6 +1149,15 @@ def main() -> int:
     if not NPC_BEHAVIOR_SCHEMA.is_file():
         print(f"error: missing schema {NPC_BEHAVIOR_SCHEMA}", file=sys.stderr)
         return 1
+    if not REWARD_GRANT_ROW_SCHEMA.is_file():
+        print(f"error: missing schema {REWARD_GRANT_ROW_SCHEMA}", file=sys.stderr)
+        return 1
+    if not REWARD_TABLE_SCHEMA.is_file():
+        print(f"error: missing schema {REWARD_TABLE_SCHEMA}", file=sys.stderr)
+        return 1
+    if not ENCOUNTER_DEF_SCHEMA.is_file():
+        print(f"error: missing schema {ENCOUNTER_DEF_SCHEMA}", file=sys.stderr)
+        return 1
 
     skill_schema = json.loads(SKILL_SCHEMA.read_text(encoding="utf-8"))
     skill_validator = Draft202012Validator(skill_schema)
@@ -936,6 +1176,9 @@ def main() -> int:
     ability_validator = Draft202012Validator(ability_schema)
     npc_behavior_schema = json.loads(NPC_BEHAVIOR_SCHEMA.read_text(encoding="utf-8"))
     npc_behavior_validator = Draft202012Validator(npc_behavior_schema)
+    reward_table_validator = _reward_table_def_validator()
+    encounter_schema = json.loads(ENCOUNTER_DEF_SCHEMA.read_text(encoding="utf-8"))
+    encounter_validator = Draft202012Validator(encounter_schema)
 
     if not SKILLS_DIR.is_dir():
         print(f"error: missing directory {SKILLS_DIR}", file=sys.stderr)
@@ -1010,6 +1253,24 @@ def main() -> int:
         print(f"error: no *_npc_behaviors.json files under {NPC_BEHAVIORS_DIR}", file=sys.stderr)
         return 1
 
+    if not REWARD_TABLES_DIR.is_dir():
+        print(f"error: missing directory {REWARD_TABLES_DIR}", file=sys.stderr)
+        return 1
+
+    reward_table_files = sorted(REWARD_TABLES_DIR.glob("*_reward_tables.json"))
+    if not reward_table_files:
+        print(f"error: no *_reward_tables.json files under {REWARD_TABLES_DIR}", file=sys.stderr)
+        return 1
+
+    if not ENCOUNTERS_DIR.is_dir():
+        print(f"error: missing directory {ENCOUNTERS_DIR}", file=sys.stderr)
+        return 1
+
+    encounter_files = sorted(ENCOUNTERS_DIR.glob("*_encounters.json"))
+    if not encounter_files:
+        print(f"error: no *_encounters.json files under {ENCOUNTERS_DIR}", file=sys.stderr)
+        return 1
+
     seen_ids: dict[str, str] = {}
     id_to_category: dict[str, str] = {}
     errors = 0
@@ -1237,6 +1498,44 @@ def main() -> int:
         print(e5m2_attack_ability_err, file=sys.stderr)
         return 1
 
+    reward_table_errors, reward_table_seen_ids, reward_table_id_to_row = _validate_reward_table_catalogs(
+        reward_table_files=reward_table_files,
+        reward_table_validator=reward_table_validator,
+        known_item_ids=frozenset(item_seen_ids.keys()),
+    )
+    if reward_table_errors:
+        print(f"content validation failed with {reward_table_errors} error(s)", file=sys.stderr)
+        return 1
+
+    e5m3_reward_table_err = _prototype_e5m3_reward_table_gate(reward_table_seen_ids)
+    if e5m3_reward_table_err:
+        print(e5m3_reward_table_err, file=sys.stderr)
+        return 1
+
+    e5m3_reward_grant_err = _prototype_e5m3_reward_grant_content_gate(reward_table_id_to_row)
+    if e5m3_reward_grant_err:
+        print(e5m3_reward_grant_err, file=sys.stderr)
+        return 1
+
+    encounter_errors, encounter_seen_ids, encounter_id_to_row = _validate_encounter_catalogs(
+        encounter_files=encounter_files,
+        encounter_validator=encounter_validator,
+        known_reward_table_ids=frozenset(reward_table_seen_ids.keys()),
+    )
+    if encounter_errors:
+        print(f"content validation failed with {encounter_errors} error(s)", file=sys.stderr)
+        return 1
+
+    e5m3_encounter_err = _prototype_e5m3_encounter_gate(encounter_seen_ids)
+    if e5m3_encounter_err:
+        print(e5m3_encounter_err, file=sys.stderr)
+        return 1
+
+    e5m3_encounter_cross_ref_err = _prototype_e5m3_encounter_cross_ref_gate(encounter_id_to_row)
+    if e5m3_encounter_cross_ref_err:
+        print(e5m3_encounter_cross_ref_err, file=sys.stderr)
+        return 1
+
     print(
         "content OK: "
         f"{len(skill_files)} skill catalog file(s), "
@@ -1248,12 +1547,16 @@ def main() -> int:
         f"{len(recipe_files)} recipe catalog file(s), "
         f"{len(ability_files)} ability catalog file(s), "
         f"{len(npc_behavior_files)} npc behavior catalog file(s), "
+        f"{len(reward_table_files)} reward table catalog file(s), "
+        f"{len(encounter_files)} encounter catalog file(s), "
         f"{len(seen_ids)} unique skill id(s), "
         f"{len(item_seen_ids)} unique item id(s), "
         f"{len(node_seen_ids)} unique nodeDefId(s), "
         f"{len(recipe_seen_ids)} unique recipe id(s), "
         f"{len(ability_seen_ids)} unique ability id(s), "
         f"{len(npc_behavior_seen_ids)} unique npc behavior id(s), "
+        f"{len(reward_table_seen_ids)} unique reward table id(s), "
+        f"{len(encounter_seen_ids)} unique encounter id(s), "
         f"{len(track_skill_ids)} mastery track(s)"
     )
     return 0