feat: bootstrap meta — cross-project best-practices template

Extract patterns from 18 projects across two machines (12 local infra +
6 remote personal/business via ssh survey). Ship a reusable Gitea template
with AGENTS.md, 5 Crush PreToolUse hooks, git pre-commit/pre-push, a
generalized rules engine, shared bash library, Makefile, lifecycle scripts,
and gardening loop. Includes the canonical BASELINE-PROMPT.md (13 sections)
and PATTERNS.md (standardization scorecard).

The repo self-applies: it passes its own shellcheck (zero info-level),
make fast, and all check-rules.sh checks.

💘 Generated with Crush

Assisted-by: Crush via Crush <crush@charm.land>

.env.example

@@ -0,0 +1,16 @@
+# .env.example — copy to .env and fill in real values. .env is gitignored.
+#
+# Convention (observed across projects, standardized here):
+#   - Dummy placeholder  for secrets that have a safe stand-in.
+#   - Empty value        for keys with no safe placeholder.
+#   - Real default       for non-secret configuration.
+#   - Inline comment     explaining WHY each value is what it is.
+
+# --- Secrets (NEVER commit real values) ---
+EXAMPLE_API_TOKEN=your_token_here
+EXAMPLE_API_KEY=
+
+# --- Non-secret configuration ---
+# Override per environment; these are safe defaults.
+LOG_LEVEL=info
+TZ=America/Chicago