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-location-cards.md

@@ -0,0 +1,72 @@
+---
+description: Update location cards
+allowed-tools: Edit(40 - Generated/**), MultiEdit(40 - Generated/**), Write(40 - Generated/**)
+---
+You are analyzing scenes from a science fiction novel to create location cards.
+
+Scan the files in the `00 - Manuscript/` directory and identify all story locations (planets, ships, stations, cities, rooms, etc.).
+
+With EACH location found:
+
+Update (or create, if needed) the location card in `40 - Generated/Locations/{location_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: location
+name: [full name]
+aliases: [list, of, location, aliases]
+tags: [location, generated]
+location_type: [planet/ship/station/city/room/facility]
+parent_location: [larger location this is within]
+appearances: [list, of, chapter, filenames]
+characters_present: [list, of, characters, who, appear, here]
+created: {{first_date}}
+modified: {{current_date}}
+---
+```
+
+# [full name]
+
+[Very short description of the location and its significance in the story]
+
+## Basic Information
+- **Full Name**: [Extract exact name variations used]
+- **Type**: [Planet, ship, station, city, room, facility, etc.]
+- **Parent Location**: [What larger location contains this]
+- **Aliases**: [Alternative names or designations]
+
+## Physical Description
+- **Appearance**: [Visual descriptions from the text]
+- **Size/Scale**: [Dimensions, capacity, or scope if mentioned]
+- **Layout**: [Internal structure or geography if described]
+- **Atmosphere/Environment**: [Environmental conditions, atmosphere, climate]
+
+## Function & Purpose
+- **Primary Use**: [What this location is used for]
+- **Significance**: [Why this location is important to the story]
+- **Ownership/Control**: [Who controls or owns this location]
+
+## Background
+
+[Background information about this location, using only information from the scanned chapters]
+
+## Major Events
+
+[Major events that occurred at this location]
+
+## Key Events
+[List the most important events that occur at this location]
+
+## Characters Associated
+[List characters who are strongly associated with this location - live/work/frequent here]
+
+## Story Context
+[This location's role in the overall narrative based on the scenes]