chore(docs): regenerate man page, HTML docs, and wiki

docs/html/10-6-dependency-catalog.html

@@ -504,7 +504,7 @@ tailscale  Mesh VPN client</code></pre>
             Rust-based tools and to build fish from source. All paths
             are gated on type -q cargo and degrade gracefully.
 starship    Cross-shell prompt; loaded via type -q starship guard.
-            Without it fish falls back to its built-in default prompt.
+            Without it the Catppuccin nim-style fallback prompt activates.
 uv          Python package and project manager (Astral); used by the
             fish-from-source build path in fish-deps. All consumers
             degrade gracefully without it.

docs/html/11-7-customization.html

@@ -659,7 +659,7 @@ Puffer key intercepts     . ! $ * keys intercepted for smart expansion
 Starship prompt           fish_prompt replaced by Starship + OSC 133 markers
 Catppuccin colors         30+ fish_color_* variables set to Mocha palette
 FZF_DEFAULT_OPTS          FZF themed to Catppuccin Mocha colors
-Right prompt              fish_right_prompt: Docker context + timestamp</code></pre>
+Right prompt              fish_right_prompt: exit code (on failure) + dim timestamp; always rendered; Docker context added when starship+C3 active</code></pre>
 <p>The bang-bang system spans key_bindings.fish, abbr.fish, puffer.fish,
 and six expand_bang_*.fish functions. All are gated together — disabling
 C3 removes the entire bang-expansion system at once.</p>
@@ -749,14 +749,37 @@ immediately after, placing both markers on the prompt line itself. This
 allows ov to use them as sticky section headers when browsing scrollback
 logs. Without Starship, fish's built-in prompt handles these markers
 automatically.</p>
-<h3 data-number="11.6.2" id="fzf">FZF</h3>
+<h3 data-number="11.6.2" id="catppuccin-fallback-prompt">Catppuccin
+Fallback Prompt</h3>
+<p>When Starship is absent or C3 overrides are disabled, a built-in
+nim-style two-line prompt activates from functions/fish_prompt.fish. No
+external dependencies — fish builtins only.</p>
+<p>Layout:</p>
+<pre><code>┬─[user@host:~/path] (main)
+╰─&gt;$</code></pre>
+<p>Elements:</p>
+<pre><code>user        Yellow (Catppuccin Yellow); red if root
+@host       Blue (local) or Teal (SSH)
+~/path      prompt_pwd abbreviation (Catppuccin Text)
+(main)      Current git branch in Catppuccin Pink; omitted outside repos
+─[V:name]   Active Python venv basename; omitted when none
+─[N/I/R/V]  Vi-mode indicator when vi bindings are active
+┬─ / ╰─&gt;    Connector lines: Catppuccin Green on success, Red on failure</code></pre>
+<p>The right prompt (fish_right_prompt.fish) always renders, regardless
+of C3 state. On failure it shows a red ✘ and the exit code; on success
+it shows only the dim timestamp. When starship is installed and C3 is
+enabled, the active Docker context is also shown (if non-default):</p>
+<pre><code>✘ 1   󰡨 myctx   Fri Jun 12 00:51:21 2026     ← failed, starship+C3 active
+✘ 1   Fri Jun 12 00:51:21 2026               ← failed, fallback prompt
+Fri Jun 12 00:51:21 2026                     ← success (no ✘)</code></pre>
+<h3 data-number="11.6.3" id="fzf">FZF</h3>
 <p>FZF is themed to Catppuccin Mocha via FZF_DEFAULT_OPTS set in
 integrations/fzf.fish. The colors applied:</p>
 <pre><code>Background:   #1E1E2E (base)    #313244 (surface0)
 Foreground:   #CDD6F4 (text)
 Highlights:   #F38BA8 (red)     #CBA6F7 (mauve)    #B4BEFE (lavender)</code></pre>
 <p>To customize, override FZF_DEFAULT_OPTS in local.fish.</p>
-<h3 data-number="11.6.3"
+<h3 data-number="11.6.4"
 id="catppuccin-mocha-syntax-highlighting">Catppuccin Mocha Syntax
 Highlighting</h3>
 <p>The Catppuccin Mocha theme ships with this config in themes/ and is

docs/html/index.html

@@ -834,6 +834,8 @@ id="toc-prompt-and-theme">Prompt and Theme</a>
 <ul>
 <li><a href="11-7-customization.html#starship"
 id="toc-starship">Starship</a></li>
+<li><a href="11-7-customization.html#catppuccin-fallback-prompt"
+id="toc-catppuccin-fallback-prompt">Catppuccin Fallback Prompt</a></li>
 <li><a href="11-7-customization.html#fzf" id="toc-fzf">FZF</a></li>
 <li><a
 href="11-7-customization.html#catppuccin-mocha-syntax-highlighting"