feat(voyage)!: bulk content rewrite ultra -> voyage/trek prose [skip-docs]

Sed-pipeline (16 patterns, longest-match-first) sweeper residuelle ultra*-treff
i prose, command-narrativ, agent-prompts, hook-kommentarer, doc-prosa.

Pipeline-utvidelser fra V4-prompten:
- BSD-syntax [[:<:]]ultra[[:>:]] istedenfor \bultra\b (BSD sed mangler \b)
- 6 compound-patterns for ultraplan/ultraexecute/ultraresearch/ultrabrief/
  ultrareview/ultracontinue uten -local-suffiks
- ultra*-stats glob -> trek*-stats glob
- Linje-eksklusjon redusert til ultra-cc-architect (Q8); session-state-
  eksklusjonen var over-protektiv
- File-eksklusjon utvidet til settings.json, package.json, plugin.json,
  hele .claude/-treet (gitignored + V5-territorium)

Q8-undantak holdt: architecture-discovery.mjs + project-discovery.mjs urort.
Filnavn-konvensjon holdt: .session-state.local.json + *.local.* preservert.

Manuell narrative-fix: tests/lib/agent-frontmatter.test.mjs linje 10
mangled "/ultra*-local" til "/voyage*-local" (ingen slik kommando finnes);
korrigert til "/trek*".

Residualer utenfor scope (V5 handterer): package.json + .claude-plugin/
plugin.json (Step 12-14 versjons-bump). .claude/* er gitignored
spec-historikk med tilsiktet BEFORE/AFTER-narrativ.

Part of voyage-rebrand session 3 (Wave 4 / Step 10).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

agents/review-coordinator.md

@@ -1,7 +1,7 @@
 ---
 name: review-coordinator
 description: |
-  Judge Agent for /ultrareview-local. Receives findings from independent
+  Judge Agent for /trekreview. Receives findings from independent
   reviewers (brief-conformance-reviewer, code-correctness-reviewer) and
   applies BOUNDED operations: deduplication, severity ranking, HubSpot
   Judge filters, Cloudflare reasonableness filter, verdict computation.
@@ -47,7 +47,7 @@ You will receive a prompt containing:
   `brief-conformance-reviewer` and `code-correctness-reviewer` (in `quick`
   mode, only the latter).
 - **Triage map** — `{file → deep-review|summary-only|skip, reason}` from
-  the /ultrareview-local triage gate.
+  the /trekreview triage gate.
 - **Brief metadata** — `task`, `slug`, `project_dir`, `brief_path` from
   the brief frontmatter.
 - **Scope SHA range** — `scope_sha_start`, `scope_sha_end`,
@@ -128,7 +128,7 @@ trailing JSON block AND the Executive Summary's first sentence.
 ## Output: review.md content
 
 Produce the full review.md content as your output. The
-/ultrareview-local command writes it verbatim to disk.
+/trekreview command writes it verbatim to disk.
 
 ### Frontmatter (block-style YAML, NOT flow-style)
 
@@ -171,7 +171,7 @@ prefix). Flow-style `findings: [a, b]` breaks the frontmatter parser.
 8. `## Suppressed Findings` (optional) — one-line per finding dropped by
    Pass 2 or Pass 3, with the reason.
 9. `## Remediation Summary` — bullet count per severity + 1 sentence on
-   what /ultraplan-local will consume.
+   what /trekplan will consume.
 
 Each Findings subsection uses the `### {finding-id-40-char-hex}` heading
 followed by these fields:
@@ -208,7 +208,7 @@ The LAST fenced block in the file is a `json` block:
 ```
 
 The JSON `findings[].id` array MUST match the frontmatter `findings:`
-list. The downstream consumer (/ultraplan-local with
+list. The downstream consumer (/trekplan with
 `--brief review.md`) reads the JSON for full content and the frontmatter
 for the ID list.