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rdbms-playground/docs/adr/README.md
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claude@clouddev1 f0632af8af ADR-0022: ambient typing assistance (unifies I3 + I4)
Replaces the originally-planned separate ADRs for syntax
highlighting (I4) and tab completion (I3) with a single
unified design. The framing: colour, hint panel, and Tab
are three answers to the same question — what does the user
need to know mid-typing? — and planning them separately
produces three loose pieces that drift apart.

Three mid-typing states (valid-so-far / definite-error /
incomplete-but-plausible) drive four layered channels:
token-class colour and parse-error overlay (silent, always
on), hint panel ambient and Tab-triggered completion mode
(verbose, in the existing hint panel — no floating popups).

Schema-aware from day one via an IdentSlot taxonomy in the
parser (NewName / TableName / ColumnIn(TableRef::Earlier(N))
/ RelationshipName); every existing ident() call gets
audited and tagged. Completion candidates come from chumsky's
expected-token-set for keyword slots and from a new worker
request (ListNamesFor) for identifier slots.

Implementation lands in 8 green-after-each commits: theme
colours; input panel highlighting; echo line highlighting;
render-time parse + error overlay; hint panel ambient;
identifier-slot taxonomy + parser audit; schema query
plumbing; completion mode + key bindings. Estimated
1500-2500 lines across the eight stages.

Out of scope (deliberately): inline ghost text (could return
as a "most-likely" affordance later — fish-shell style),
fuzzy matching, punctuation completion, user-customisable
keybindings, SQL highlighting in advanced mode (waits on Q4).
2026-05-10 15:51:22 +00:00

31 lines
2.2 KiB
Markdown

# Architecture Decision Records
This directory contains the project's ADRs, recorded per
[ADR-0000](0000-record-architecture-decisions.md).
## Index
- [ADR-0000 — Record architecture decisions](0000-record-architecture-decisions.md)
- [ADR-0001 — Language and TUI framework](0001-language-and-tui-framework.md)
- [ADR-0002 — Database engine](0002-database-engine.md)
- [ADR-0003 — Input modes and command dispatch](0003-input-modes-and-command-dispatch.md)
- [ADR-0004 — Project file format](0004-project-file-format.md)
- [ADR-0005 — Column type vocabulary](0005-column-type-vocabulary.md)
- [ADR-0006 — Undo snapshots and replay log](0006-undo-snapshots-and-replay-log.md)
- [ADR-0007 — Sharing and export](0007-sharing-and-export.md)
- [ADR-0008 — Testing approach](0008-testing-approach.md)
- [ADR-0009 — DSL command syntax conventions](0009-dsl-command-syntax-conventions.md)
- [ADR-0010 — Database access via a dedicated worker thread](0010-database-access-via-worker-thread.md)
- [ADR-0011 — Foreign-key column type compatibility](0011-fk-column-type-compatibility.md)
- [ADR-0012 — Internal metadata for user-facing column types](0012-internal-metadata-for-user-facing-types.md)
- [ADR-0013 — Relationships, naming, and the rebuild-table strategy](0013-relationships-and-rebuild-table.md)
- [ADR-0014 — Data operations, value literals, and the auto-show pattern](0014-data-operations-and-value-model.md)
- [ADR-0015 — Project storage runtime](0015-project-storage-runtime.md)
- [ADR-0016 — Pretty table rendering for data and structure views](0016-pretty-table-rendering.md)
- [ADR-0017 — Column type-change compatibility](0017-column-type-change-compatibility.md)
- [ADR-0018 — Auto-fill contracts for `serial` and `shortid` columns](0018-auto-fill-contracts-for-serial-and-shortid.md)
- [ADR-0019 — Friendly error layer (H1) and i18n message catalog](0019-friendly-error-layer-and-i18n.md)
- [ADR-0020 — Tokenization layer for the DSL parser](0020-tokenization-layer-for-the-dsl-parser.md)
- [ADR-0021 — Parser-as-source-of-truth for H1a (per-command usage in parse errors)](0021-parser-as-source-of-truth-for-h1a.md)
- [ADR-0022 — Ambient typing assistance: colour, hint panel, completion (I3 + I4)](0022-ambient-typing-assistance.md)