feat(fiction-assistance): register plugin with full bespoke command set

Snapshot of the fiction-assistance plugin in its original Universalis-
specific form before generalization. Adds the missing plugin.json
manifest (subdirectory command paths explicitly listed), moves the two
stray root-level review files into their proper homes (review-all.md
into the reviewing-fiction skill, review-final.md as a command with
frontmatter), and registers the plugin in the marketplace.

Preserved here so the original card-generation and vault-maintenance
commands remain recoverable when the plugin is reduced to a portable
guidance-and-analysis subset in the next commit.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

fiction-assistance/skills/reviewing-fiction/Template.md

@@ -0,0 +1,72 @@
+Text in brackets explains what you should write.
+
+```
+## Scene [number and/or name]
+
+[One line synopsis]
+
+### Plot
+
+**Story Arc Position** - [Where does this scene sit in the overall story arc progression?]
+**Scene Purpose** - [What is the purpose of this scene? Is it clear?]
+**Scene Arc** - [What is the beginning, middle, and end of the scene's arc? Is it clear?]
+**Scene Anchoring** - [Is this scene grounded in time, place, and circumstance?]
+**Hooks** - [Does this scene have clear entry and exit hooks? Are they effective?]
+**Tension** - [What creates suspense or unease? Is it sustained?]
+**Conflict** - [What is the central conflict in this scene? Is the premise strong or weak?]
+**Revelation** - [What is revealed in this scene, either to characters or the reader?]
+**Action/Sequel** - [Does the scene advance the plot or show reaction/reflection?]
+
+#### Plot Assessment
+
+[Scene strengths]
+
+[Scene weaknesses and areas for improvement]
+
+[Discuss pacing, flow, and length, if needed]
+
+[Discuss the tension, conflicts, and revelations. Are the organic, meaningful, well-timed and appropriate?]
+
+[Considering the above points, reflect on the scene's plot.]
+
+### Characters
+
+**Characters Present** - [All characters present in the scene]
+**Primary POV** - [What perspective tells the scene? Was it consistant? Easy to follow?]
+**POV Goal** - [What does the primary POV character want to achieve in this scene?]
+**Plot Relation** - [Is that goal related to the plot? How (concise)?]
+**Consequences** - [What happens if the character fails to meet the goal?]
+**Impact** - [Which characters are impacted by this scene? How?]
+
+#### Character Assessment
+
+[Did the characters feel consistant in action and voice?]
+
+[Was the POV managed well? Were changes clear an unambiguous? Was the correct POV chosen?]
+
+[Were the character goals compelling?]
+
+[Considering the above points, reflect on how the character work in the scene.]
+
+### Setting
+
+**Location** - [Where does the scene take place? Is that clear and specific?]
+**Time and Date** - [When does the scene take place? Is that clear and specific?]
+**Objects** - [What items, props, or details appear?]
+**Senses** - [What builds sensual atmosphere? Sight? Smell? Sound? Taste? Touch?]
+**Emotional Impact** - [How does the setting reinforce the scene's emotional tone?]
+**Weather** - [How does the weather support the scene? Was it omitted when it could have been useful?]
+
+### Setting Assessment
+
+[Was the setting description balanced within the scene? Not too much or too little? Did it feel authentic? Clichéd?]
+
+[Did the setting enhance or distract?]
+
+[Considering the above points, reflect on the scene's setting and if it was used well, as well as any other thoughts about the setting.]
+
+### Final Thoughts
+
+[Whatever you'd like to add about the scene, or omit the section if nothing comes to mind.]
+
+```