Merge upstream origin/main (v2.60.0) with fork customizations preserved

Incorporates 78 upstream commits while preserving all local fork intent:
- Keep deleted: dhh-rails, kieran-rails, dspy-ruby, andrew-kane-gem-writer (FastAPI pivot)
- Merge both: ce-review (zip-agent-validator + design-conformance-reviewer wiring),
  kieran-python-reviewer (upstream pipeline + FastAPI conventions),
  ce-brainstorm/ce-plan/ce-work (upstream improvements + deploy wiring checks),
  todo-create (upstream template refs + assessment block),
  best-practices-researcher (upstream rename + FastAPI refs)
- Accept remote: 142 remote-only files, plugin.json, README.md
- Keep local: 71 local-only files (custom agents, skills, commands, voice)

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

plugins/compound-engineering/skills/proof-push/scripts/proof_push.sh

@@ -0,0 +1,34 @@
+#!/usr/bin/env bash
+# Push a markdown file to a running Proof server and return the document URL.
+# Usage: proof_push.sh <path-to-markdown> [server-url]
+set -euo pipefail
+
+FILE="${1:?Usage: proof_push.sh <markdown-file> [server-url]}"
+SERVER="${2:-http://localhost:4000}"
+UI_URL="${3:-http://localhost:3000}"
+
+if [[ ! -f "$FILE" ]]; then
+  echo "error: file not found: $FILE" >&2
+  exit 1
+fi
+
+TITLE=$(basename "$FILE" .md)
+
+RESPONSE=$(curl -s -X POST "${SERVER}/share/markdown" \
+  -H "Content-Type: application/json" \
+  -d "$(jq -n --arg md "$(cat "$FILE")" --arg title "$TITLE" '{markdown: $md, title: $title}')")
+
+SLUG=$(echo "$RESPONSE" | jq -r '.slug // empty')
+ERROR=$(echo "$RESPONSE" | jq -r '.error // empty')
+
+if [[ -z "$SLUG" ]]; then
+  echo "error: failed to create document${ERROR:+: $ERROR}" >&2
+  echo "$RESPONSE" >&2
+  exit 1
+fi
+
+TOKEN_PATH=$(echo "$RESPONSE" | jq -r '.tokenPath // empty')
+
+echo "slug: $SLUG"
+echo "url: ${UI_URL}/d/${SLUG}"
+[[ -n "$TOKEN_PATH" ]] && echo "editor-url: ${UI_URL}${TOKEN_PATH}"