chore: planning gate — milestones, issues, and task breakdown

Break PRD into 8 milestones (Phase 0–7) with 59 issues on Gitea.
Populate TASKS.md, update mission manifest, initialize scratchpad.
Repo created at git.mosaicstack.dev/mosaic/mosaic-stack.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

scripts/agent/log-limitation.sh

@@ -0,0 +1,44 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+TITLE="${1:-}"
+if [[ -z "$TITLE" ]]; then
+  echo "Usage: $0 \"Short limitation title\"" >&2
+  exit 1
+fi
+
+FILE="EVOLUTION.md"
+if [[ ! -f "$FILE" ]]; then
+  echo "[agent-framework] $FILE not found. Create project-specific limitations log if needed."
+  exit 0
+fi
+
+if command -v rg >/dev/null 2>&1; then
+  last_num=$(rg -o "^### L-[0-9]{3}" "$FILE" | sed 's/^### L-//' | sort -n | tail -1)
+else
+  last_num=$(grep -E "^### L-[0-9]{3}" "$FILE" | sed 's/^### L-//' | sort -n | tail -1)
+fi
+
+if [[ -z "$last_num" ]]; then
+  next_num="001"
+else
+  next_num=$(printf "%03d" $((10#$last_num + 1)))
+fi
+
+entry_id="L-$next_num"
+
+cat <<EOF2
+
+### $entry_id: $TITLE
+
+| Aspect | Details |
+|--------|---------|
+| **Pain** | TODO |
+| **Impact** | TODO |
+| **Frequency** | TODO |
+| **Current Workaround** | TODO |
+| **Proposed Solution** | TODO |
+| **Platform Implication** | TODO |
+EOF2
+
+echo "[agent-framework] Suggested limitation ID: $entry_id"