chore(repo): gitignore archived/, drop stray og-cheet-sheet.md

.gitignore

@@ -19,6 +19,7 @@ demo/*.omni/
 /docs/internal
 
 # Local-only working files (not for the public repo)
+/archived/
 .claude/
 .worktrees/
 /CLAUDE.md

og-cheet-sheet.md

@@ -1,40 +0,0 @@
-# Omnigraph Cheat Sheet
-
-## Local Query Validation
-
-Use an explicit schema file:
-
-```bash
-omnigraph lint  --query ./queries.gq --schema ./schema.pg --json
-omnigraph check --query ./queries.gq --schema ./schema.pg
-```
-
-Use a local or `s3://` repo target:
-
-```bash
-omnigraph lint  --query ./queries.gq ./repo.omni --json
-omnigraph check --query ./queries.gq s3://bucket/repo
-```
-
-Use `omnigraph.yaml` target resolution:
-
-```bash
-omnigraph lint --query ./queries.gq --target local --config ./omnigraph.yaml
-```
-
-> The previous `omnigraph query lint` / `omnigraph query check` spellings
-> are kept as deprecated argv shims that print a one-line warning to
-> stderr and rewrite to the canonical `omnigraph lint` / `omnigraph check`.
-
-## What It Checks
-
-- parses every query in the file
-- typechecks each query against the resolved schema
-- warns on hardcoded mutation queries with no params
-- warns when nullable node fields have no update-query coverage
-
-## Current Limits
-
-- repo-backed lint is local/S3-only in v1
-- HTTP targets need `--schema`
-- exit code is nonzero only when there are strict validation errors