fix: sync spike/sketch workflows with upstream skill improvements

Spike workflow:
- Add prior spike check — skips already-validated questions
- Add comparison spikes (NNN-a/NNN-b) for head-to-head evaluation
- Add research-before-building step (context7 + web search)
- Add forensic logging/observability for runtime-interactive spikes
- Add Type column to MANIFEST, type/Research/Observability to README

Sketch workflow:
- Add research-the-target-stack step — check component availability,
  framework constraints, and idiomatic patterns before building

Spike wrap-up workflow:
- Replace per-spike curation with auto-include-all (every spike carries
  signal: VALIDATED=patterns, PARTIAL=constraints, INVALIDATED=landmines)
- Add Step 10 intelligent routing — integration spike candidates,
  frontier spike candidates, and standard next-step options

Commands updated with context7/WebSearch tools and --text flag.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

commands/gsd/sketch.md

@@ -1,7 +1,7 @@
 ---
 name: gsd:sketch
 description: Rapidly sketch UI/design ideas using throwaway HTML mockups with multi-variant exploration
-argument-hint: "<design idea to explore> [--quick]"
+argument-hint: "<design idea to explore> [--quick] [--text]"
 allowed-tools:
   - Read
   - Write
@@ -10,6 +10,10 @@ allowed-tools:
   - Grep
   - Glob
   - AskUserQuestion
+  - WebSearch
+  - WebFetch
+  - mcp__context7__resolve-library-id
+  - mcp__context7__query-docs
 ---
 <objective>
 Explore design directions through throwaway HTML mockups before committing to implementation.
@@ -41,5 +45,5 @@ Design idea: $ARGUMENTS
 
 <process>
 Execute the sketch workflow from @~/.claude/get-shit-done/workflows/sketch.md end-to-end.
-Preserve all workflow gates (intake, decomposition, variant evaluation, MANIFEST updates, commit patterns).
+Preserve all workflow gates (intake, decomposition, target stack research, variant evaluation, MANIFEST updates, commit patterns).
 </process>

commands/gsd/spike-wrap-up.md

@@ -27,5 +27,5 @@ project history. Output skill goes to `./.claude/skills/spike-findings-[project]
 
 <process>
 Execute the spike-wrap-up workflow from @~/.claude/get-shit-done/workflows/spike-wrap-up.md end-to-end.
-Preserve all curation gates (per-spike review, grouping approval, CLAUDE.md routing line).
+Preserve all workflow gates (auto-include, feature-area grouping, skill synthesis, CLAUDE.md routing line, intelligent next-step routing).
 </process>

commands/gsd/spike.md

@@ -1,7 +1,7 @@
 ---
 name: gsd:spike
 description: Rapidly spike an idea with throwaway experiments to validate feasibility before planning
-argument-hint: "<idea to validate> [--quick]"
+argument-hint: "<idea to validate> [--quick] [--text]"
 allowed-tools:
   - Read
   - Write
@@ -10,6 +10,10 @@ allowed-tools:
   - Grep
   - Glob
   - AskUserQuestion
+  - WebSearch
+  - WebFetch
+  - mcp__context7__resolve-library-id
+  - mcp__context7__query-docs
 ---
 <objective>
 Rapid feasibility validation through focused, throwaway experiments. Each spike answers one
@@ -33,9 +37,10 @@ Idea: $ARGUMENTS
 
 **Available flags:**
 - `--quick` — Skip decomposition/alignment, jump straight to building. Use when you already know what to spike.
+- `--text` — Use plain-text numbered lists instead of AskUserQuestion (for non-Claude runtimes).
 </context>
 
 <process>
 Execute the spike workflow from @~/.claude/get-shit-done/workflows/spike.md end-to-end.
-Preserve all workflow gates (decomposition, risk ordering, verification, MANIFEST updates, commit patterns).
+Preserve all workflow gates (prior spike check, decomposition, research, risk ordering, observability assessment, verification, MANIFEST updates, commit patterns).
 </process>