chore(sf): delete orphan templates/reassessment.md

29-line template with zero callers. inlineTemplate("reassessment")
isn't called anywhere; reassess-roadmap.md prompt has its own inline
structure. Removing prevents drift between dead template and live
prompt.

Resolves: orphan-template-reassessment.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/resources/extensions/sf/templates/reassessment.md

@@ -1,29 +0,0 @@
----
-date: {{YYYY-MM-DD}}
-triggering_slice: {{milestoneId/sliceId}}
-verdict: {{no-change | modified}}
----
-
-# Reassessment: {{triggering_slice}}
-
-## Changes Made
-
-<!-- For "no-change" verdict: 1-2 sentences confirming the roadmap still holds. Keep it brief.
-     For "modified" verdict: list which slices changed (reordered, merged, split, added, removed) and why.
-     Don't restate what the slice built — the slice summary covers that. Focus on what changed in the plan. -->
-
-{{placeholder}}
-
-## Requirement Coverage Impact
-
-<!-- Which requirements were added, removed, deferred, or reordered.
-     Write "None." if no requirements were affected. -->
-
-{{placeholder}}
-
-## Decision References
-
-<!-- D-numbers from DECISIONS.md that informed or resulted from this reassessment.
-     Write "None." if no recorded decisions apply. -->
-
-{{placeholder}}