fix(02): revise plans based on checker feedback

- 02-01 Task 3: Add concrete REPL verification command for PluginManifest.parse
- 02-02 Task 1: Add FieldDef case class to placeholder types in PluginRegistration.scala
- 02-02 Task 1: Document PluginEnv as placeholder to be expanded in 02-03
- 02-03 Task 3: Remove duplicate Main.scala code, keep only corrected version
- 02-03: Add SummerPlugin.scala to files_modified for PluginEnv update

.planning/phases/02-plugin-system/02-01-PLAN.md

@@ -282,7 +282,25 @@ dependencies:
   golem15.user: "^1.0.0"
 ```
 
-Then verify parsing works by checking the code compiles and the types are correct.
+Then test discovery works by running this command in the Mill REPL:
+```bash
+./mill -i summercms.console
+```
+
+Once in the REPL, verify parsing:
+```scala
+import plugin._
+val yaml = """
+vendor: test
+name: sample
+version: 1.0.0
+description: Test plugin
+"""
+val result = PluginManifest.parse(yaml)
+println(result) // Should print Right(PluginManifest(test,sample,1.0.0,...))
+```
+
+Exit REPL with `:quit` after verification.
   </verify>
   <done>PluginManifest parses YAML manifests, PluginDiscovery scans plugins/ directory, plugins/ directory exists</done>
 </task>

.planning/phases/02-plugin-system/02-02-PLAN.md

@@ -136,7 +136,9 @@ case class PluginRegistration(
   // Event subscriptions (Phase 2 extension API)
   events: List[EventSubscription] = List.empty,
   // Extensions to other plugins (Phase 2 extension API)
-  extensions: List[ExtensionDef] = List.empty
+  extensions: List[ExtensionDef] = List.empty,
+  // Form field definitions (for YAML-driven forms)
+  fields: List[FieldDef] = List.empty
 )
 
 object PluginRegistration:
@@ -149,6 +151,7 @@ case class NavigationDef(id: String, label: String, url: String, icon: String =
 case class SettingDef(key: String, label: String, icon: String = "")
 case class EventSubscription(eventType: String, handler: String)
 case class ExtensionDef(target: String, extensionClass: String)
+case class FieldDef(name: String, fieldType: String)
 ```
 
 **SummerPlugin.scala:**
@@ -172,6 +175,9 @@ trait SummerPlugin:
    * Async boot phase - can perform effects.
    * Called after all dependencies have booted.
    * Use for: database setup, event subscriptions, service initialization.
+   *
+   * PluginEnv is a placeholder that will be expanded in 02-03 to include
+   * EventService and ExtensionRegistry when the extension API is implemented.
    */
   def boot: ZIO[PluginEnv, PluginError, Unit] = ZIO.unit
 
@@ -181,12 +187,15 @@ trait SummerPlugin:
    */
   def shutdown: ZIO[Any, Nothing, Unit] = ZIO.unit
 
-/** Environment available to plugins during boot */
+/**
+ * Environment available to plugins during boot.
+ * Initially just PluginContext; extended in 02-03 to include EventService & ExtensionRegistry.
+ */
 type PluginEnv = PluginContext
 ```
   </action>
   <verify>Run `./mill summercms.compile` - all types compile without errors</verify>
-  <done>PluginState enum with all lifecycle states, PluginContext, PluginRegistration with placeholder defs, SummerPlugin trait</done>
+  <done>PluginState enum with all lifecycle states, PluginContext, PluginRegistration with placeholder defs including FieldDef, SummerPlugin trait</done>
 </task>
 
 <task type="auto">

.planning/phases/02-plugin-system/02-03-PLAN.md

@@ -9,6 +9,7 @@ files_modified:
   - summercms/src/plugin/ExtensionRegistry.scala
   - summercms/src/plugin/SummerEvent.scala
   - summercms/src/plugin/package.scala
+  - summercms/src/plugin/SummerPlugin.scala
   - summercms/src/Main.scala
 autonomous: true
 
@@ -311,7 +312,7 @@ trait BlogExtension:
   /** Validate post data */
   def validate(data: Map[String, Any]): Either[String, Unit] = Right(())
 
-// FieldDef is already defined in PluginRegistration.scala, reuse it
+// FieldDef is defined in PluginRegistration.scala
 ```
   </action>
   <verify>Run `./mill summercms.compile` - ExtensionRegistry compiles. It provides type-safe extension registration keyed by ClassTag.</verify>
@@ -319,9 +320,10 @@ trait BlogExtension:
 </task>
 
 <task type="auto">
-  <name>Task 3: Create plugin package exports and integrate with Main</name>
+  <name>Task 3: Create plugin package exports, update PluginEnv, and integrate with Main</name>
   <files>
     summercms/src/plugin/package.scala
+    summercms/src/plugin/SummerPlugin.scala
     summercms/src/Main.scala
   </files>
   <action>
@@ -340,87 +342,47 @@ package object plugin:
   type PluginBootEnv = PluginContext & EventService & ExtensionRegistry
 ```
 
-**Update Main.scala** to integrate the plugin system:
+**Update SummerPlugin.scala** to use the expanded PluginEnv:
+
+Read the existing file from 02-02 and update ONLY the PluginEnv type alias at the bottom:
+
 ```scala
+package plugin
+
 import zio.*
-import zio.http.*
-import zio.config.typesafe.TypesafeConfigProvider
 
-import api.Routes
-import _root_.config.{AppConfig as SummerConfig}
-import db.QuillContext
-import plugin.{PluginManager, PluginDiscovery, pluginLayer}
+/** Base trait for all SummerCMS plugins */
+trait SummerPlugin:
+  /** Plugin identifier - must match manifest */
+  def id: PluginId
 
-object Main extends ZIOAppDefault {
+  /**
+   * Synchronous registration phase - pure data, no effects.
+   * Called during discovery to collect plugin declarations.
+   */
+  def register(ctx: PluginContext): PluginRegistration = PluginRegistration.empty
 
-  private val banner: String =
-    """
-      |
-      |             |   .
-      |      `.  *  |     .'
-      |        `. ._|_* .'  .
-      |      . * .'   `.  *
-      |   -------|     |-------
-      |      .  *`.___.' *  .
-      |         .'  |* `.  *
-      |       .' *  |  . `.
-      |           . |
-      |
-      |     S U M M E R C M S
-      |""".stripMargin
+  /**
+   * Async boot phase - can perform effects.
+   * Called after all dependencies have booted.
+   * Use for: database setup, event subscriptions, service initialization.
+   */
+  def boot: ZIO[PluginEnv, PluginError, Unit] = ZIO.unit
 
-  override val bootstrap: ZLayer[ZIOAppArgs, Any, Any] =
-    Runtime.setConfigProvider(TypesafeConfigProvider.fromResourcePath())
+  /**
+   * Async shutdown phase - cleanup resources.
+   * Called in reverse dependency order during application shutdown.
+   */
+  def shutdown: ZIO[Any, Nothing, Unit] = ZIO.unit
 
-  override def run: ZIO[Any, Any, Any] =
-    for {
-      cfg <- ZIO.config[SummerConfig](SummerConfig.config)
-      _   <- Console.printLine(banner)
-      _   <- Console.printLine(s"Starting on port ${cfg.server.port}...")
-      _   <- Console.printLine("")
-      // Initialize plugin system
-      _   <- Console.printLine("Loading plugins...")
-      _   <- PluginManager.loadPlugins(PluginDiscovery.defaultPluginsDir)
-        .catchAll(e => Console.printLine(s"Plugin loading warning: ${e.message}").as(()))
-      _   <- PluginManager.bootAll
-        .catchAll(e => Console.printLine(s"Plugin boot warning: ${e.message}").as(()))
-      plugins <- PluginManager.listPlugins
-      _   <- Console.printLine(s"Loaded ${plugins.count(_._2.isActive)} plugin(s)")
-      _   <- Console.printLine("")
-      // Note: Migrations are NOT auto-run. Use CLI to run migrations (Phase 5).
-      _   <- Server.serve(Routes.routes).provide(
-               Server.defaultWithPort(cfg.server.port),
-               QuillContext.dataSourceLayer
-             )
-    } yield ()
-
-  // Provide plugin layers
-  override def run: ZIO[Any, Any, Any] =
-    (for {
-      cfg <- ZIO.config[SummerConfig](SummerConfig.config)
-      _   <- Console.printLine(banner)
-      _   <- Console.printLine(s"Starting on port ${cfg.server.port}...")
-      _   <- Console.printLine("")
-      // Initialize plugin system
-      _   <- Console.printLine("Loading plugins...")
-      _   <- PluginManager.loadPlugins(PluginDiscovery.defaultPluginsDir)
-        .catchAll(e => Console.printLine(s"Plugin loading warning: ${e.message}").as(()))
-      _   <- PluginManager.bootAll
-        .catchAll(e => Console.printLine(s"Plugin boot warning: ${e.message}").as(()))
-      plugins <- PluginManager.listPlugins
-      _   <- Console.printLine(s"Loaded ${plugins.count(_._2.isActive)} plugin(s)")
-      _   <- Console.printLine("")
-      // Note: Migrations are NOT auto-run. Use CLI to run migrations (Phase 5).
-      _   <- Server.serve(Routes.routes).provide(
-               Server.defaultWithPort(cfg.server.port),
-               QuillContext.dataSourceLayer
-             )
-    } yield ()).provide(pluginLayer)
+/**
+ * Environment available to plugins during boot.
+ * Includes context, events, and extension registry for full plugin capabilities.
+ */
+type PluginEnv = PluginContext & EventService & ExtensionRegistry
 ```
 
-Wait - the above has a duplicate `def run`. Let me provide the correct version:
-
-**Main.scala (corrected full file):**
+**Main.scala** (complete replacement):
 ```scala
 import zio.*
 import zio.http.*
@@ -483,7 +445,7 @@ object Main extends ZIOAppDefault {
 Run `./mill summercms.compile` - Main.scala compiles with plugin integration.
 Run `./mill summercms.run` - Server starts, logs "Loading plugins..." and "Loaded 0 plugin(s)" (since no plugins exist yet).
   </verify>
-  <done>Plugin package exports combined layer, Main.scala loads and boots plugins on startup</done>
+  <done>Plugin package exports combined layer, PluginEnv updated to include EventService and ExtensionRegistry, Main.scala loads and boots plugins on startup</done>
 </task>
 
 </tasks>