Enhance narrative systems with detailed implementation guides and data-driven structures

- Updated BPC_NarrativeStateSystem with a comprehensive manual implementation guide, including class setup, variable initialization, and function breakdowns.
- Expanded BPC_ObjectiveSystem documentation to include a manual implementation guide and detailed function descriptions.
- Added a manual implementation guide for BPC_DialoguePlaybackSystem, outlining class setup and function nodes.
- Introduced a manual implementation guide for BPC_DialogueChoiceSystem, detailing choice presentation and selection processes.
- Enhanced BPC_BranchingConsequenceSystem documentation with a manual implementation guide for consequence evaluation.
- Updated BPC_TrialScenarioSystem with a manual implementation guide for scenario management.
- Expanded BPC_LoreUnlockSystem documentation to include a manual implementation guide for lore entry management.
- Added a manual implementation guide for BP_NarrativeTriggerVolume, detailing trigger volume setup and action execution.
- Enhanced BPC_EndingAccumulator documentation with a manual implementation guide for ending evaluation.
- Updated BPC_HitReactionSystem with a manual implementation guide for hit reaction management.
- Added a manual implementation guide for BPC_RecoilSystem, detailing recoil application and recovery processes.
- Introduced DT_ProjectTags.csv to define gameplay tags for various systems, enhancing data-driven design capabilities.

docs/blueprints/07-narrative/60_BPC_DialoguePlaybackSystem.md

@@ -119,4 +119,75 @@ Manages the playback of dialogue sequences: line queuing, timing, subtitle routi
 | [`GI_GameFramework`](../01-core/04_GI_GameFramework.md) | Direct | Set game phase during dialogue |
 
 ### Reuse Notes
-`DA_DialogueSequence` data assets hold all content — add new sequences per project without touching this system. Voice audio is optional: sequences work without audio (text-only dialogue). Lip-sync data is per-line and can use audio-driven or procedural lip sync.
+`DA_DialogueSequence` data assets hold all content — add new sequences per project without touching this system. Voice audio is optional: sequences work without audio (text-only dialogue). Lip-sync data is per-line and can use audio-driven or procedural lip sync.
+
+---
+
+## Manual Implementation Guide
+
+### Class Setup
+1. Create Blueprint Class: Parent = `ActorComponent`, Name = `BPC_DialoguePlaybackSystem`
+2. Add to Player Character
+3. Define struct `S_DialogueLine`: SpeakerTag, LineText (Text), VoiceAudio (SoundBase), Duration (Float), FlagToSetOnComplete (GameplayTag), bIsChoicePoint (Boolean)
+
+### Variable Init (BeginPlay)
+```
+Event BeginPlay
+  ├─ Set bIsPlaying = false, bIsPaused = false
+  ├─ Set LineQueue = empty Array<S_DialogueLine>
+  └─ Cache: BPC_NarrativeStateSystem, SS_AudioManager (via Get Game Instance)
+```
+
+### Function Node-by-Node
+
+#### `PlaySequence(Sequence: DA_DialogueSequence)` → `void`
+```
+Step 1: If bIsPlaying → QueueSequence (or return error)
+Step 2: Validate RequiredFlags: Sequence.RequiredFlags → HasAllFlags → if false, return
+Step 3: Set bIsPlaying = true
+Step 4: Load LineQueue from Sequence.Lines array (copy all lines)
+Step 5: Set CurrentLineIndex = 0
+Step 6: Fire OnDialogueStarted(Sequence.SequenceTag)
+Step 7: Call PlayNextLine()
+```
+
+#### `PlayNextLine()` → `void`
+```
+Step 1: If CurrentLineIndex >= LineQueue.Length:
+  Fire OnSequenceCompleted → Set bIsPlaying=false → Return
+Step 2: CurrentLine = LineQueue[CurrentLineIndex]
+Step 3: If CurrentLine.bIsChoicePoint:
+  Fire OnChoicePointReached → hand to BPC_DialogueChoiceSystem → pause here
+  Return (resume when choice returns NextSequenceTag)
+Step 4: Fire OnLineStarted(CurrentLine)
+Step 5: If CurrentLine.VoiceAudio valid:
+  SS_AudioManager.PlayDialogue(CurrentLine.VoiceAudio)
+Step 6: Show subtitle: Fire dispatcher → WBP_SubtitleDisplay.Show(CurrentLine.LineText, SpeakerTag)
+Step 7: Set Timer (CurrentLine.Duration) → On timer: Call OnLineCompleted()
+```
+
+#### `OnLineCompleted()` → `void`
+```
+Step 1: If CurrentLine.FlagToSetOnComplete valid:
+  BPC_NarrativeStateSystem.SetFlag(FlagToSetOnComplete, true)
+Step 2: Fire OnLineCompleted(CurrentLine)
+Step 3: Increment CurrentLineIndex
+Step 4: Call PlayNextLine()
+```
+
+#### `SkipCurrentLine()` → `void`
+```
+Step 1: Clear LineTimer
+Step 2: Stop VoiceAudio if playing
+Step 3: Fire OnLineCompleted (skip to next line)
+```
+
+### Build Checklist
+- [ ] Create BPC_DialoguePlaybackSystem, add to Player Character
+- [ ] Define S_DialogueLine struct and DA_DialogueSequence Data Asset
+- [ ] Implement PlaySequence with flag validation
+- [ ] Implement PlayNextLine with line queue + timer + audio + subtitle
+- [ ] Implement choice point handoff to DialogueChoiceSystem
+- [ ] Implement SkipCurrentLine/SkipSequence
+- [ ] Wire subtitles to WBP_SubtitleDisplay via dispatcher
+- [ ] Test: trigger dialogue → lines play sequentially → subtitles show → audio plays