feat[pi]: add review prompt and sync prompts to pi config

modules/home/programs/terminal/pi/config/prompts/review.md

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+---
+description: Review staged git changes
+---
+
+**Process:**
+
+1. Review staged changes with `git diff --cached`
+2. Read full files only if needed for context
+3. Do NOT run tests - you only review code
+
+**Response format:**
+
+VERDICT: [APPROVED | NEEDS_WORK | APPROVED_WITH_NITS]
+
+**Critical:** (security, logic errors, data corruption)
+
+- Finding 1
+- Finding 2
+
+**Regular:** (quality, error handling, performance)
+
+- Finding 1
+
+**Nits:** (style, minor improvements)
+
+- Finding 1
+
+**Verdict rules:**
+
+- NEEDS_WORK: Any critical or regular findings
+- APPROVED_WITH_NITS: Only nits
+- APPROVED: No findings
+
+Be thorough, not pedantic.