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/commands/generate/update-event-cards.md

@@ -0,0 +1,89 @@
+---
+description: Update event cards
+allowed-tools: Edit(40 - Generated/**), MultiEdit(40 - Generated/**), Write(40 - Generated/**)
+---
+You are analyzing scenes from a science fiction novel to create event cards.
+
+Scan the files in the `00 - Manuscript/` directory and identify all major plot events and turning points in the story.
+
+With EACH event found:
+
+Update (or create, if needed) the event card in `40 - Generated/Events/{event_name}.md` for use in Obsidian.
+
+Use wiki-style links (`[[file.md]]` or `[[file.md|display name]]`) when referencing manuscript chapters or other files in `40 - Generated/` such as characters, locations, species, etc.  This applies in the frontmatter and in the Markdown below it.
+
+Extract factual information ONLY from the scenes. Do not invent or infer details not explicitly stated in the text.
+
+ALWAYS update the card to match the current format.
+
+Use the following structure:
+
+```yaml
+---
+type: event
+name: [full name]
+aliases: [list, of, event, aliases]
+tags: [event, generated]
+event_type: [battle/discovery/revelation/death/arrival/departure/meeting/betrayal]
+significance: [major/minor/turning_point/climax]
+chronology: [early/middle/late/epilogue]
+appearances: [list, of, chapter, filenames]
+characters_involved: [list, of, key, participants]
+locations: [list, of, locations, where, event, occurs]
+created: {{first_date}}
+modified: {{current_date}}
+---
+```
+
+# [full name]
+
+[Very short description of the event and its significance in the story]
+
+## Basic Information
+- **Full Name**: [Extract or create descriptive event name]
+- **Type**: [Battle, discovery, revelation, death, arrival, etc.]
+- **Significance**: [Major, minor, turning point, climax]
+- **Timeline**: [When this occurs in the story chronology]
+
+## Event Details
+- **Location**: [Where the event takes place]
+- **Duration**: [How long the event lasts, if mentioned]
+- **Trigger**: [What causes this event to happen]
+- **Immediate Cause**: [Direct circumstances leading to event]
+
+## Participants & Witnesses
+- **Primary Participants**: [Main characters actively involved]
+- **Secondary Participants**: [Supporting characters involved]
+- **Witnesses**: [Characters who observe but don't participate]
+- **Absent Characters**: [Important characters notably not present]
+
+## Background
+
+[Background information about this event, using only information from the scanned chapters]
+
+## Major Events
+
+[The sequence of what happens during this event]
+
+## Event Sequence
+- **Preparation**: [Setup and preparation leading to the event]
+- **Initiation**: [How the event begins]
+- **Development**: [How the event unfolds step by step]
+- **Climax**: [The peak moment of the event]
+- **Resolution**: [How the event concludes]
+
+## Consequences & Impact
+- **Immediate Consequences**: [What happens right after]
+- **Character Impact**: [How characters are changed by this event]
+- **Plot Impact**: [How this event affects the overall story]
+- **World Impact**: [How this event changes the story world]
+- **Future Implications**: [What this event sets up for later]
+
+## Connections
+- **Caused By**: [Previous events that led to this one]
+- **Leads To**: [Subsequent events this one triggers]
+- **Related Events**: [Other events connected to this one]
+- **Parallel Events**: [Similar events happening elsewhere/elsewhen]
+
+## Story Context
+[This event's role in the overall narrative structure and its importance to the plot]