Add ai-sources task, update ai-docs to include all docs

ai-sources: concatenates all git-tracked files (excluding lock files
and other non-useful artifacts) for full codebase AI context (~353K
tokens).

ai-docs: now concatenates all docs instead of a curated subset (~85K
tokens).

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

mise-tasks/ai-sources

@@ -0,0 +1,19 @@
+#!/usr/bin/env bash
+#MISE description="Concatenate all BlumeOps source files for AI context"
+
+set -euo pipefail
+
+ROOT="$(cd "$(dirname "$0")/.." && pwd)"
+
+# All git-tracked files, excluding lock files and other non-useful artifacts
+git -C "$ROOT" ls-files \
+  | grep -v '\.lock$' \
+  | grep -v '\.gitignore$' \
+  | grep -v '\.gitkeep$' \
+  | grep -v '\.gitattributes$' \
+  | grep -v '^LICENSE$' \
+  | while read -r f; do
+      printf '=== %s ===\n' "$f"
+      cat "$ROOT/$f"
+      printf '\n'
+    done