## MODIFIED Requirements

### Requirement: Implicit note shorthand

The client SHALL treat bare string arguments (with no subcommand) as an implicit note only when **more than one argument** is provided. `kb "my note"` SHALL behave identically to submitting a note via `POST /api/v1/jobs`. All persistent flags (`--format`, `--engine`, `--api-key`) and the root `--tags` flag SHALL work with the shorthand form. A single bare word SHALL be rejected with an error message.

#### Scenario: Quick note via bare argument
- **WHEN** the user runs `kb "remember to update DNS"`
- **THEN** the client SHALL submit the text as a note via `POST /api/v1/jobs` and print `Queued: note`

#### Scenario: Bare argument with tags
- **WHEN** the user runs `kb "server room is building 3" --tags ops`
- **THEN** the client SHALL submit the note with the specified tags

#### Scenario: Bare argument with JSON output
- **WHEN** the user runs `kb "my note" --format json`
- **THEN** the client SHALL output the raw JSON response from the engine

#### Scenario: Bare argument duplicate detection
- **WHEN** the user runs `kb "my note"` and the engine returns HTTP 409
- **THEN** the client SHALL handle the duplicate response identically to the previous `kb add --note` behaviour

#### Scenario: Multiple unquoted words
- **WHEN** the user runs `kb remember to update dns` (without quotes)
- **THEN** the client SHALL join all arguments into a single note string and submit it

#### Scenario: Single bare word rejected
- **WHEN** the user runs `kb infow` (a single unrecognized word)
- **THEN** the client SHALL print to stderr: `Unknown command "infow". Run 'kb --help' for available commands.` followed by a hint about note usage, and exit with a non-zero code

#### Scenario: No interference with subcommands
- **WHEN** the user runs `kb search "query"` or any other existing subcommand
- **THEN** the client SHALL route to the subcommand as before — the implicit note shorthand SHALL NOT interfere

#### Scenario: No arguments
- **WHEN** the user runs `kb` with no arguments
- **THEN** the client SHALL display the help text