Deterministic Rules (TG001–TG008)

Filter citation entailment checks and workspace AST symbol rules.

Code	Category	Severity	Verdict & Check
`TG001`	entailment	CRITICAL	Phantom Source Citation (`PHANTOM_CITATION`) Claim cites a `[source_id]` that does not exist in the provided context corpus.
`TG002`	entailment	HIGH	Low Lexical/Entity Support (`UNVERIFIED`) IDF-weighted content-token and technical-entity overlap between claim and cited source falls below threshold.
`TG003`	entailment	CRITICAL	Negation Polarity Inversion (`CONTRADICTED`) High entity/predicate overlap with a source sentence, but opposite negation or antonym polarity (`enabled/disabled`, `permitted/prohibited`).
`TG004`	entailment	CRITICAL	Numeric & Magnitude Drift (`NUMERIC_DRIFT`) Claim introduces a number, percentage, or currency quantity (`ms`, `USD`, `UGX`, `%`) that mismatches the cited source.
`TG005`	entailment	MEDIUM	Uncited Factual Assertion (`UNVERIFIED`) Factual or numeric proposition in strict-grounding mode lacks any supporting source citation or workspace evidence.
`TG006`	workspace_grounding	CRITICAL	Non-Existent File Path (`BROKEN_CODE_REF`) Referenced file path does not exist inside the configured workspace root or attempts path traversal.
`TG007`	workspace_grounding	HIGH	Out-of-Bounds Line Range (`BROKEN_CODE_REF`) Referenced line range (`#Lstart-Lend`) exceeds the actual line count of the workspace file.
`TG008`	workspace_grounding	CRITICAL	Phantom Code Symbol (`BROKEN_CODE_REF`) Referenced function, class, or method symbol does not exist in the file's Python AST or TS/JS/Go/Rust symbol table.