feat: add TestDescKeyYAMLLinkage, quarantine 20 orphan YAML entries

Bidirectional linkage check between DescKey constants and YAML
asset files. Every YAML key must have a DescKey constant; every
DescKey value must exist as a YAML key.

Caught and quarantined 20 orphan YAML entries left behind by the
dead export cleanup in the previous commit.

Signed-off-by: Jose Alekhinne <jose@ctx.ist>

Author: josealekhine

internal/assets/commands/text/errors.yaml

@@ -5,42 +5,8 @@ err.add.file-not-found:
   short: "context file %s not found. Run 'ctx init' first"
 err.add.index-update:
   short: 'failed to update index in %s: %w'
-err.add.missing-decision:
-  short: |-
-    decisions require complete ADR format
-
-    Missing required flags: %s
-
-    Usage:
-      ctx add decision "Decision title" \
-        --context "What prompted this decision" \
-        --rationale "Why this choice over alternatives" \
-        --consequence "What changes as a result"
-
-    Example:
-      ctx add decision "Use PostgreSQL for primary database" \
-        --context "Need a reliable database for production workloads" \
-        --rationale "PostgreSQL offers ACID compliance, JSON support, and team familiarity" \
-        --consequence "Team needs PostgreSQL training; must set up replication"
 err.add.missing-fields:
   short: '%s missing required fields: %s'
-err.add.missing-learning:
-  short: |-
-    learnings require complete format
-
-    Missing required flags: %s
-
-    Usage:
-      ctx add learning "Learning title" \
-        --context "What prompted this learning" \
-        --lesson "The key insight" \
-        --application "How to apply this going forward"
-
-    Example:
-      ctx add learning "Go embed requires files in same package" \
-        --context "Tried to embed files from parent directory, got compile error" \
-        --lesson "go:embed only works with files in same or child directories" \
-        --application "Keep embedded files in internal/templates/, not project root"
 err.add.no-content:
   short: no content provided
 err.add.no-content-provided:
@@ -70,8 +36,6 @@ err.backup.create-archive-dir:
   short: 'failed to create archive directory: %w'
 err.backup.create-backup:
   short: 'failed to create backup %s: %w'
-err.backup.create-backup-generic:
-  short: 'failed to create backup: %w'
 err.backup.invalid-backup-scope:
   short: 'invalid scope %q: must be project, global, or all'
 err.backup.invalid-smb-url:
@@ -148,8 +112,6 @@ err.date.invalid-date-value:
   short: invalid date %q (expected YYYY-MM-DD)
 err.deps.cargo-metadata-failed:
   short: 'cargo metadata failed: %w'
-err.deps.cargo-not-found:
-  short: 'cargo not found in PATH: install Rust toolchain to analyze Cargo projects'
 err.deps.parse-cargo-metadata:
   short: 'parsing cargo metadata: %w'
 err.fs.boundary-violation:

internal/assets/commands/text/hooks.yaml

@@ -102,8 +102,6 @@ skill-discovery.content:
     choice, or discover something surprising.
 skill-discovery.relay-prefix:
   short: 'Session tip: skills available for mid-session use.'
-skill-discovery.relay-message:
-  short: Skill discovery nudge
 check-context-size.billing-box-title:
   short: Billing Threshold
 check-context-size.billing-fallback:
@@ -329,13 +327,6 @@ context-load-gate.footer:
 context-load-gate.header:
   short: |
     PROJECT CONTEXT (auto-loaded by system hook - already in your context window)
-context-load-gate.index-fallback:
-  short: (no index entries)
-context-load-gate.index-header:
-  short: |+
-    --- %s (index - read full entries by date when relevant) ---
-    %s
-
 context-load-gate.oversize-action:
   short: |
     Action: Run /ctx-consolidate to distill context files.

internal/assets/commands/text/ui.yaml

@@ -348,8 +348,6 @@ memory.publish-title:
   short: |+
     # Project Context (managed by ctx)
 
-pad.key-created:
-  short: Scratchpad key created at %s
 prune.dry-run-line:
   short: '  would prune: %s (age: %s)'
 prune.dry-run-summary:
@@ -358,8 +356,6 @@ prune.error-line:
   short: '  error removing %s: %v'
 prune.summary:
   short: Pruned %d files (skipped %d recent, preserved %d global)
-rc.parse_warning:
-  short: 'ctx: warning: failed to parse %s: %v (using defaults)'
 stats.empty:
   short: No stats recorded yet.
 stats.header-format:
@@ -457,38 +453,22 @@ task-snapshot.saved:
   short: ✓ Snapshot saved to %s
 time.ago:
   short: ' ago'
-time.commit:
-  short: commit
 time.commit-count:
   short: 1 commit
-time.commits:
-  short: commits
 time.commits-count:
   short: '%d commits'
-time.day:
-  short: day
 time.day-count:
   short: 1 day
-time.days:
-  short: days
 time.days-count:
   short: '%d days'
-time.hour:
-  short: hour
 time.hour-count:
   short: 1 hour
-time.hours:
-  short: hours
 time.hours-count:
   short: '%d hours'
 time.just-now:
   short: just now
-time.minute:
-  short: minute
 time.minute-count:
   short: 1 minute
-time.minutes:
-  short: minutes
 time.minutes-count:
   short: '%d minutes'
 watch.apply-failed:

internal/assets/commands/text/write.yaml

@@ -179,8 +179,6 @@ write.init-backup:
   short: '  ✓ %s (backup)'
 write.init-created-dir:
   short: '  ✓ %s/'
-write.init-created-with:
-  short: '  ✓ %s%s'
 write.init-creating-root-files:
   short: Creating project root files...
 write.init-ctx-content-exists:
@@ -718,16 +716,11 @@ write.journal-source-detail-int:
   short: '%s %d'
 write.journal-source-section-heading:
   short: '%s %s'
-write.journal-source-bullet-item:
-  short: '- %s'
 write.unpublish-not-found:
   short: No published block found in %s.
 write.wikilink-list-item:
   short: "- %s%s"
 
-write.notify-close-response:
-  short: "ctx: close response body: %v"
-
 write.context-dir-label:
   short: "Context: %s"
 write.context-dir-bracket: