[Erry91]

What this changes

docs/standards-parity.md now cites the 2024 clause of every EN 1838 requirement. The clause numbers come from the table of contents of the free SIST EN 1838:2025 preview that SIST and iTeh publish. The preview is kept in the git-ignored plan/standards/; nothing from it is committed.

The preview ends inside clause 3 (terms and definitions), so it contains no requirement values. Every value stays "unverified" and gap 4 stays open; the gap row now says the clause numbers are verified and the values are not.

The preview does show what the 2024 edition added. These are now rows in the parity table and, where luxpath will check them, parity entries:

• specific areas, 5.4: toilets and changing rooms, public indoor swimming pools, motor generator, control, switch and plant rooms (en1838.specific-areas)
• safety signs, clause 6 (en1838.safety-signs)
• local area lighting, 7.1 (en1838.local-area)
• standby lighting, 7.2: out of scope, since it isn't escape lighting
• the annexes: durations and activation times (A), on-site measurement (B), lockdown (C), national A-deviations (D)

The foreword confirms the changes from 2013 and that every CEN member, Italy included, adopts the identical text; research.md records this.

How you verified it

• cargo xtask ci (including xtask parity, which validates the three new entries)
• New behaviour has a test: not applicable (docs and the parity list only)
• Requirement checks are tested on both sides of every threshold: not applicable

Life safety (AGENTS.md §2)

• No path reports "pass" when data is missing or ambiguous: no code changes
• Assumptions that changed are shown in reports: none changed

Never panic (AGENTS.md §3)

• No code changes

Provenance (AGENTS.md §1)

• No text, tables or figures from a standard: clause numbers, short clause titles and the list of changes, in our own words. The preview is in plan/ only
• Nothing derived from the internals of closed lighting tools; no GPL/AGPL code
• No manufacturer photometric files or real building plans committed

Records

• parity/features.toml updated (three planned entries)
• docs/status.md, docs/gaps.md (row 4), docs/research.md and the ROADMAP.md progress log updated

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