[thekevinbot]

Fixes #1587

A hook key now fills the declared column it names under SQLite's identifier rule (case-insensitive for ASCII letters only), for both the config on-file command (shape_json_rows) and SDK Table closures (normalize_against, plus its emitted marking), in relaxed and strict tables. Previously {"title":...} into CREATE TABLE posts (TITLE TEXT) was a silent NULL, and a strict table rejected it as an extra + missing column. An exact-case key wins over a case variant. docs/reference/config.md updated to state the rule.

Sibling: #1590 (schema inference on keys differing only by case) is in the same case-handling area and is left for its own PR.

Red run

Test-only head cfb5a00f: https://github.com/thekevinscott/dirsql/actions/runs/41879228357 -- Integration tests (Linux) and Windows tests fail only in hook_key_case (left: Null, right: Text("hello"); strict: Schema mismatch: extra columns not in table posts: title) and hook_key_case_e2e ([{"TITLE":null}] vs [{"TITLE":"hello"}]).

E2E Verification

• Ran e2e suites locally for every affected SDK
• Python SDK e2e: pass (impacted subset)
• TypeScript SDK e2e: pass (full suite)
• Rust core e2e (if applicable): pass (hook_key_case_e2e)
• packages/python/e2e-attestations/<branch>.json receipt written if packages/python changed (just e2e-attest-python)
• packages/ts/e2e-attestations/<branch>.json receipt written if packages/ts changed (just e2e-attest-ts)
• Command(s) run: uv run maturin develop --release; cargo build --release -p dirsql --features cli; cd packages/python && testing-conventions e2e attest 'uv run python -m pytest tests/e2e/on_file_query_test.py tests/e2e/declared_table_name_test.py tests/e2e/query_contract_test.py tests/e2e/jsonl_parse_speed_test.py tests/e2e/frontmatter_parse_speed_test.py -x -q'; just e2e-attest-ts; cargo test -p dirsql --features cli --test hook_key_case --test hook_key_case_e2e
• Result summary: Python 17 passed; TS 19 passed; Rust new tests 6 passed. Hand check with the release binary: the issue repro prints [{"TITLE":"hello"}] relaxed and strict; strict still rejects a genuinely extra key. Python SDK Table(on_file=...) returns {'TITLE': 'hello'} relaxed and strict.

Changelog / Migrations

• Changelog fragment added under <root>/<pkg>/changelog.d/ for each changed package (or: skip-changelog trailer on a commit with reason)
• Migration fragment with the same slug added under <root>/<pkg>/migrations.d/ for each changed package (every subsection but Summary _None._ when nothing breaks)