fix: short-circuit --assumptions and --from-gsd2 dispatch; add changeset

- discuss-phase --assumptions: add 'Stop here' + convert If→Otherwise
  chain so the flag is an exclusive route (CodeRabbit major)
- import --from-gsd2: add 'Stop here' + convert final 'Execute...'
  to 'Otherwise...' to prevent fall-through to standard import
  (CodeRabbit major, inline comment)
- .changeset/rewire-orphaned-workflows-3131.md: add missing changeset

.changeset/rewire-orphaned-workflows-3131.md

@@ -0,0 +1,6 @@
+---
+type: Changed
+pr: 3131
+---
+
+**Re-wired 4 orphaned workflows as flags on parent commands** — six workflows were mis-categorised as "outright deleted dead skills" during the #2790 consolidation; two were caught by prior PRs (#3045, #3038) and four are fixed here. New flags: `/gsd-discuss-phase --assumptions` (surfaces Claude's implementation assumptions before planning), `/gsd-pause-work --report` (generates a post-session summary in `.planning/reports/`), `/gsd-manager --analyze-deps` (scans ROADMAP phases for dependency relationships before parallel execution), `/gsd-import --from-gsd2` (reverse-migrates a GSD-2 `.gsd/` project back to GSD v1 `.planning/` format). Also sweeps 29 stale `/gsd-*` command references across 27 user-facing files (English + 4 locales). Closes #3131.

commands/gsd/discuss-phase.md

@@ -51,11 +51,12 @@ DISCUSS_MODE=$(gsd-sdk query config-get workflow.discuss_mode 2>/dev/null || ech
 
 If `--assumptions` is in $ARGUMENTS:
 Read and execute `~/.claude/get-shit-done/workflows/list-phase-assumptions.md` end-to-end.
+Stop here.
 
-If `DISCUSS_MODE` is `"assumptions"`:
+Otherwise, if `DISCUSS_MODE` is `"assumptions"`:
 Read and execute `~/.claude/get-shit-done/workflows/discuss-phase-assumptions.md` end-to-end.
 
-If `DISCUSS_MODE` is `"discuss"` (or unset, or any other value):
+Otherwise (`"discuss"` / unset / any other value):
 Read and execute `~/.claude/get-shit-done/workflows/discuss-phase.md` end-to-end.
 
 **MANDATORY:** Read the appropriate workflow file BEFORE taking any action. The objective and success_criteria sections in this command file are summaries — the workflow file contains the complete step-by-step process with all required behaviors, config checks, and interaction patterns. Do not improvise from the summary.

commands/gsd/import.md

@@ -35,6 +35,7 @@ $ARGUMENTS
 If `--from-gsd2` is in $ARGUMENTS:
 Run: `node "$HOME/.claude/get-shit-done/bin/gsd-tools.cjs" from-gsd2`
 Pass `--path <dir>` if provided. Present the migration result to the user.
+Stop here (do not run the standard import workflow).
 
-Execute the import workflow end-to-end.
+Otherwise, execute the import workflow end-to-end.
 </process>