chemenu/work/link-taxonomy-migration/glossary.md

# Glossary: link-taxonomy-migration

Vocabulary decided while processing one page, carried forward so u3 (concepts) and u2
(projects/people/comparisons) do not re-decide it. Add to this file before dispatching the next
unit or sub-session.

## Mechanism correction, discovered in u3 (concepts): `xref add` is always safe

`xref add --a A --b B --rel X` **only ever touches page A** - it upserts (idempotent by target),
so calling it on a pair that already has an unlabelled or even a differently-labelled entry just
relabels it in place. `xref remove` is the only bidirectional, destructive call (strips the pair
from **both** pages' `related:` and matching body lines). u1 already learned to sequence removes
before adds per pair; u3 goes further and mostly **stops calling `xref remove` at all** for
drift-only entries. Standing policy for the rest of this migration: when a frontmatter `related:`
entry does not deserve its most literal label, relabel it with the best authorised fit - `see-also`
if truly nothing fits - via `xref add`, rather than removing it. Only remove when the entry is a
misplaced mention with nothing worth keeping on either side, and only after confirming (grep) that
the target page carries no reciprocal reference that a bidirectional strip would destroy. This
avoided several near-misses in u3 (`CPPC`/`amd-pstate` already carried `amd-pstate implements
CPPC` from u1 - removing would have destroyed it; relabelled as `CPPC mechanism amd-pstate`
instead).

## Unit sizing correction (2026-09-02)

u1 as written in `plan.md` (`kb/entities/systems, tools, technologies`, estimated ~45 pages) is
actually **57 pages carrying 199 `related:` entries** (systems 6/19, technologies 20/69,
tools 31/111). At one `wikitool` call per edge (no bulk mode exists for `xref add`/`xref
remove`), that is far past the 60-call session ceiling. Decided with the user: run u1 as planned
in scope (all three areas, one eventual publish), but as **per-area sub-sessions**, each under
its own `WIKITOOL_SESSION_ID`, holding `index rebuild`/`lint`/`log append`/`publish` until every
area is done:

- `link-taxonomy-migration/u1` - systems (done, see below)
- `link-taxonomy-migration/u1-technologies` - technologies
- `link-taxonomy-migration/u1-tools` - tools

## Recurring pattern: reverse-reading edge, correct statement already elsewhere

Several old bullets read true only backwards, and the *correct* forward statement already exists
(as still-unmigrated prose) on the other page - sometimes in a collection this unit does not
touch. Rule applied: drop the backward one from the current page's `related:` (via `xref
remove`, so it stops showing as an unlabelled edge) and note the correct edge here for whichever
unit owns the other page. Never invert the label to fake the direction.

Deferred edges for later units, discovered while processing systems:

- **u3 (concepts):** `Denylist over Allowlist` invokes-or-operates-on `AGENTS.md` (its own body
  already says "beruft sich auf: AGENTS.md" - pick the label when concepts' outbound set is in
  front of you).
- **u3 (concepts):** `LLM Wiki Pattern` derived-from-or-abstracted-from `Memex` (Memex's old
  "Geistiger Vorgänger von" bullet reads backwards from Memex's side).
- **u2 (people):** `Vannevar Bush` owns `Memex` (Memex's "Erfunden von" bullet is `owns`'s
  unlabelled inverse; `owns` has no catalogue inverse, so it must be authored from Bush's page).
- **u2 (people):** `E3DC GmbH` owns `E3DC` (same reasoning: `owns` has no inverse to assert from
  the owned entity's side).
- **u2 (projects):** no action needed on `ha-core`/`hacs-e3dc` - E3DC's page independently
  asserts `required-by` (a real pair with a genuine inverse), which already covers the
  relationship without needing anything written on the project pages.

## Label choices worth reusing

- A file that is normative *because* a tool enforces it (`AGENTS.md` vs. `wikitool`) is
  `depends-on`, not `implements`/`mechanism` - those realization labels are entities-to-concepts
  only, and these pages are both entities.
- An optional dependency that the source tolerates the absence of (`CLAUDE.md`'s `@ENVIRONMENT.md`
  import) is `uses`, not `depends-on` - the catalogue's own test ("does removing the target break
  this thing?") answers no.
- A root file that another root file's own prose defines the rules for (`AGENTS.md` defines what
  `ENVIRONMENT.md` is and is allowed to contain) is `owns` from the defining page, not asserted
  back from the defined one (no inverse exists).
- A hardware/software pairing where the dependent side is a specific integration package, not the
  general platform (E3DC vs. `ha-core`/`hacs-e3dc` vs. Home Assistant broadly): assert
  `required-by` from the depended-upon entity's page, and do not manufacture an edge to the broad
  platform if no specific claim holds there.
- A device supporting a communication standard: `implements` reads fine even outside pure
  software (E3DC implements Modbus).
- Two entities in the same wiki cited as parallel real-world examples of the same concept, with
  no sharper label fitting: `see-also` is correct and not a cop-out (Memex/Tolkien Gateway).
- **Taxonomy gap, confirmed while processing u2 (people):** there is no "created by" / "authored"
  / "extends the work of" label for a person-entity pointing at another entity or at a concept.
  `owns` covers a person being *accountable for* an entity going forward (used for `Vannevar
  Bush owns Memex`, `Rohit Gupta owns Agent Memory`, `E3DC GmbH owns E3DC`), but a one-time
  historical act of creating/originating a *concept* (Karpathy authoring the LLM Wiki Pattern,
  Bush originating Memex-the-idea) or of one person's work building on another's (Gupta extending
  Karpathy) has nothing in Realization or Lineage that is authorised for a person: those
  registers are concept-to-concept or concept-to-entity, never entity-to-entity or
  entity-to-concept for authorship. Resolved as `see-also` in every such case on Karpathy's,
  Gupta's and Bush's own pages, checked against every register first - not a stretch, a genuine
  gap. Worth proposing a label (`originates`/`authored-by`?) if this recurs in u3/u4.
- **comparisons pages carry no `related:` field at all.** `types/comparison.md` declares only
  `entities` (`page_ref_fields: [entities]`) - unlabelled by the schema, like `sources:`. `xref
  add`/`xref remove` refuse on this type ("type does not declare a related: field"). The
  `compares-with` label from `kb/comparisons/COLLECTION.md`'s `outbound:` block is documentational
  only for this type: it is written into the `## Beziehungen` prose by hand (there is no marker
  region either), never into machine data. Confirmed on `amd-pstate vs acpi-cpufreq.md`.
- A dependent-side project whose own page only names the platform vaguely ("Kernintegrationsbibliothek
  für E3DC-Systeme") while a specific downstream package (a HACS component, an automation
  blueprint) explicitly wraps it: assert `required-by` from the depended-upon project's page for
  each specific downstream package, mirroring `depends-on` asserted on each dependent's own page -
  the same genuine two-sided pair as `E3DC`/`ha-core` from u1, one level up the stack
  (`ha-core`/`hacs-e3dc`, `ha-core`/`hacs-integration-blueprint`).
- An external, out-of-wiki reference project cited only as "look how someone else solved this" (a
  GitHub repo mentioned as a structural analogue, no functional dependency): `see-also` asserted
  from the external project's own page toward the project it inspired, not the reverse - matches
  "reads correctly from the source page" even though nothing here is a stretch, just weak by
  nature (`wiki-skills`, `wiki-skills-vanillaflava`, `llm-wiki-skills` -> `Chemenu`).