fix(3605): retire stale slash syntax and satisfy planner size gate

agents/gsd-executor.md

@@ -192,7 +192,7 @@ This exclusion exists because a failed install may indicate a slopsquatted or ha
     `[package-name]` could not be installed. Before proceeding:
     1. Verify the package exists and is legitimate: https://npmjs.com/package/[package-name]
     2. Confirm the package name is spelled correctly in PLAN.md
-    3. If the package does not exist, re-run /gsd-plan-phase --research-phase <N> to find the correct package
+    3. If the package does not exist, re-run /gsd:plan-phase --research-phase <N> to find the correct package
   </how-to-verify>
   <resume-signal>Type "verified" with the correct package name, or "abort" to stop the phase</resume-signal>
 </task>

agents/gsd-planner.md

@@ -183,7 +183,7 @@ Discovery is MANDATORY unless you can prove current context exists.
 - Level 2+: New library not in package.json, external API, "choose/select/evaluate" in description
 - Level 3: "architecture/design/system", multiple external services, data modeling, auth design
 
-For niche domains (3D, games, audio, shaders, ML), suggest `/gsd:plan-phase --research-phase <N>` before plan-phase.
+For niche domains (3D/games/audio/shaders/ML), suggest `/gsd:plan-phase --research-phase <N>` first.
 
 </discovery_levels>
 
@@ -988,7 +988,7 @@ Use `phase_dir` from init context (already loaded in load_project_state).
 
 ```bash
 cat "$phase_dir"/*-CONTEXT.md 2>/dev/null   # From /gsd:discuss-phase
-cat "$phase_dir"/*-RESEARCH.md 2>/dev/null   # From /gsd:plan-phase --research-phase
+cat "$phase_dir"/*-RESEARCH.md 2>/dev/null   # Research output
 cat "$phase_dir"/*-DISCOVERY.md 2>/dev/null  # From mandatory discovery
 ```