Add field references, hooks, and join strategies to schema

Introduces support for field references in filter operators, adds Hook and HookEvent schemas and documentation, and implements join strategy options for joins. Aggregation nodes now support filter clauses. Updates documentation and JSON schemas to reflect these enhancements, and extends PluginContext and Manifest with driver and function contributions.

Author: hotlong

content/docs/references/data/filter/ComparisonOperator.mdx

@@ -7,7 +7,7 @@ description: ComparisonOperator Schema Reference
 
 | Property | Type | Required | Description |
 | :--- | :--- | :--- | :--- |
-| **$gt** | `number \| string` | optional |  |
-| **$gte** | `number \| string` | optional |  |
-| **$lt** | `number \| string` | optional |  |
-| **$lte** | `number \| string` | optional |  |
+| **$gt** | `number \| string \| object` | optional |  |
+| **$gte** | `number \| string \| object` | optional |  |
+| **$lt** | `number \| string \| object` | optional |  |
+| **$lte** | `number \| string \| object` | optional |  |

content/docs/references/data/filter/FieldOperators.mdx

@@ -9,10 +9,10 @@ description: FieldOperators Schema Reference
 | :--- | :--- | :--- | :--- |
 | **$eq** | `any` | optional |  |
 | **$ne** | `any` | optional |  |
-| **$gt** | `number \| string` | optional |  |
-| **$gte** | `number \| string` | optional |  |
-| **$lt** | `number \| string` | optional |  |
-| **$lte** | `number \| string` | optional |  |
+| **$gt** | `number \| string \| object` | optional |  |
+| **$gte** | `number \| string \| object` | optional |  |
+| **$lt** | `number \| string \| object` | optional |  |
+| **$lte** | `number \| string \| object` | optional |  |
 | **$in** | `any[]` | optional |  |
 | **$nin** | `any[]` | optional |  |
 | **$between** | `any[]` | optional |  |

content/docs/references/data/filter/FieldReference.mdx

@@ -0,0 +1,10 @@
+---
+title: FieldReference
+description: FieldReference Schema Reference
+---
+
+## Properties
+
+| Property | Type | Required | Description |
+| :--- | :--- | :--- | :--- |
+| **$field** | `string` | ✅ | Field Reference/Column Name |

content/docs/references/data/hook/Hook.mdx

@@ -0,0 +1,18 @@
+---
+title: Hook
+description: Hook Schema Reference
+---
+
+## Properties
+
+| Property | Type | Required | Description |
+| :--- | :--- | :--- | :--- |
+| **name** | `string` | ✅ | Hook unique name (snake_case) |
+| **label** | `string` | optional | Description of what this hook does |
+| **object** | `string \| string[]` | ✅ | Target object(s) |
+| **events** | `Enum<'beforeFind' \| 'afterFind' \| 'beforeFindOne' \| 'afterFindOne' \| 'beforeCount' \| 'afterCount' \| 'beforeAggregate' \| 'afterAggregate' \| 'beforeInsert' \| 'afterInsert' \| 'beforeUpdate' \| 'afterUpdate' \| 'beforeDelete' \| 'afterDelete'>[]` | ✅ | Lifecycle events |
+| **handler** | `string` | optional | Function handler name (e.g. "my_plugin.validate_account") |
+| **script** | `string` | optional | Inline script body |
+| **priority** | `number` | optional | Execution priority |
+| **async** | `boolean` | optional | Run specifically as fire-and-forget |
+| **onError** | `Enum<'abort' \| 'log'>` | optional | Error handling strategy |

content/docs/references/data/hook/HookEvent.mdx

@@ -0,0 +1,21 @@
+---
+title: HookEvent
+description: HookEvent Schema Reference
+---
+
+## Allowed Values
+
+* `beforeFind`
+* `afterFind`
+* `beforeFindOne`
+* `afterFindOne`
+* `beforeCount`
+* `afterCount`
+* `beforeAggregate`
+* `afterAggregate`
+* `beforeInsert`
+* `afterInsert`
+* `beforeUpdate`
+* `afterUpdate`
+* `beforeDelete`
+* `afterDelete`

content/docs/references/data/hook/meta.json

@@ -0,0 +1,3 @@
+{
+  "title": "Hook"
+}

content/docs/references/data/meta.json

@@ -5,6 +5,7 @@
     "dataset",
     "field",
     "filter",
+    "hook",
     "mapping",
     "object",
     "query",

content/docs/references/data/query/AggregationNode.mdx

@@ -11,3 +11,4 @@ description: AggregationNode Schema Reference
 | **field** | `string` | optional | Field to aggregate (optional for COUNT(*)) |
 | **alias** | `string` | ✅ | Result column alias |
 | **distinct** | `boolean` | optional | Apply DISTINCT before aggregation |
+| **filter** | `any` | optional | Filter/Condition to apply to the aggregation (FILTER WHERE clause) |

content/docs/references/data/query/JoinNode.mdx

@@ -8,6 +8,7 @@ description: JoinNode Schema Reference
 | Property | Type | Required | Description |
 | :--- | :--- | :--- | :--- |
 | **type** | `Enum<'inner' \| 'left' \| 'right' \| 'full'>` | ✅ | Join type |
+| **strategy** | `Enum<'auto' \| 'database' \| 'hash' \| 'loop'>` | optional | Execution strategy hint |
 | **object** | `string` | ✅ | Object/table to join |
 | **alias** | `string` | optional | Table alias |
 | **on** | `any` | ✅ | Join condition |

content/docs/references/data/query/JoinStrategy.mdx

@@ -0,0 +1,11 @@
+---
+title: JoinStrategy
+description: JoinStrategy Schema Reference
+---
+
+## Allowed Values
+
+* `auto`
+* `database`
+* `hash`
+* `loop`