fix(#326): enforce context fidelity in planning pipeline (#391)

* prompt(001): map dependencies for new-project command

* fix(#326): enforce context fidelity in planning pipeline

Root cause: User decisions from CONTEXT.md were available but not
enforced throughout the RESEARCH → PLAN → VERIFY chain.

Changes:
- gsd-planner: Add <context_fidelity> section requiring agents to
  parse and honor user decisions BEFORE creating tasks. Includes
  self-check checklist and conflict handling guidance.

- gsd-phase-researcher: Add User Constraints as FIRST section in
  downstream consumer table. Require researcher to copy CONTEXT.md
  decisions verbatim to RESEARCH.md so planner sees them even if
  it only skims.

- research.md template: Add <user_constraints> section that must
  be populated first. Locked decisions, Claude's discretion, and
  deferred ideas copied verbatim from CONTEXT.md.

The command file (commands/gsd/plan-phase.md) already passes
CONTEXT_CONTENT to all agents. These changes add the enforcement
layer in the agent instructions.

Fixes #326, #216, #206

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

get-shit-done/templates/research.md

@@ -15,6 +15,29 @@ Template for `.planning/phases/XX-name/{phase}-RESEARCH.md` - comprehensive ecos
 **Domain:** [primary technology/problem domain]
 **Confidence:** [HIGH/MEDIUM/LOW]
 
+<user_constraints>
+## User Constraints (from CONTEXT.md)
+
+**CRITICAL:** If CONTEXT.md exists from /gsd:discuss-phase, copy locked decisions here verbatim. These MUST be honored by the planner.
+
+### Locked Decisions
+[Copy from CONTEXT.md `## Decisions` section - these are NON-NEGOTIABLE]
+- [Decision 1]
+- [Decision 2]
+
+### Claude's Discretion
+[Copy from CONTEXT.md - areas where researcher/planner can choose]
+- [Area 1]
+- [Area 2]
+
+### Deferred Ideas (OUT OF SCOPE)
+[Copy from CONTEXT.md - do NOT research or plan these]
+- [Deferred 1]
+- [Deferred 2]
+
+**If no CONTEXT.md exists:** Write "No user constraints - all decisions at Claude's discretion"
+</user_constraints>
+
 <research_summary>
 ## Summary