Mihaela Mihaljevic 8d30010e0d docs: align stale figures with code and the enforced XSTS gate

- README, roadmap: XSTS status quad and gates table now read the enforced
  0/43/0/31 (Tests/XSTSSuiteTests.swift); test count 986/169 to 1448/258;
  encoding list and the remaining-work section reflect shipped reality;
  check-all expansion lists the validation and changelog gates
- GEMINI.md, onboarding-antigravity.md: valid-schemas-rejected 1 to 0 and the
  pinned baselines updated to current
- SECURITY.md: complete the reporting address
- Parsing.InputEncoding: doc comment lists the full shipped encoding set
- Schema.XSDParserUnion: guard the localName interpolation with ?? "" to match
  the same line and silence an optional-interpolation warning (internal dedup
  key, behavior preserving)
- CHANGELOG: Unreleased entries for the above

2026-06-19 23:32:04 +02:00

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Roadmap

Living index of open work. Pin #167 on GitHub for the checklist view. Released v0.2.0 (2026-06-16); pre-1.0 until the production-readiness gates in docs/production-readiness.md are earned.

Current focus (priority order)

#161: cross-document schema composition (include/import/redefine): chameleon include + cross-container reference checks landed; attg/schZ XSTS burn-down still open.
#158 / #159: Particle Valid Restriction/Extension completion.
#169: located schema diagnostics (line/column).
#172–#174: instance-validation cluster tasks.

Parallel: #130 (XSLT suite), #139 (performance epic; tasks #175–#178).

M1 done: #171 schema differential harness (closed; opt-in; 231 XSTS oracle disagreements pinned) + generative fuzz + validation framework (#92).

XSTS gates (current enforced baselines)

These mirror the ratchet asserted in Tests/XSTSSuiteTests.swift; update both together.

Gate	Now	Issue
Valid schemas rejected	0	#148
Invalid schemas accepted	43	#145
Valid instances rejected	0	#146
Invalid instances accepted	31	#147

Gates are metric trackers, not implementation tasks. Pick up task issues; ratchet baselines in Tests/XSTSSuiteTests.swift when counts fall.

Milestones

Milestone	Exit criteria	Key issues
M1: Trust the oracle	Reference differential + fuzz	~~#171~~ (closed), fuzz
M2: Schema compiles correctly	#145 to 0	#161, #158, #159
M3: Instances validate correctly	#146, #147 to 0	#172, #173, #174
M4: IDE-ready diagnostics	Located errors, proven bounds	#169
M5: 1.0	All gates at 0	#148 (closed at floor), #130, #139

Labels

Label	Meaning
`epic`	Grouping issue
`gate`	XSTS outcome metric
`task`	Implementation work
`area-schema` / `area-instance` / `area-infra` / `area-xslt` / `area-perf`	Subsystem
`priority-P0` / `P1` / `P2`	Critical path vs parallel

docs/production-readiness.md: the bar for IDE authority
docs/schema-validity-burndown.md: schema-side burn-down protocol
docs/xsts-deviations.md: deviation taxonomy and documented floors

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