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Entity radius purge - #1030

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tonyjamesstark:entity-radius-purge
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tonyjamesstark:entity-radius-purge

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This PR depends on PR 5. Upstream rejects any numeric radius in /co purge, so kills of one entity type can only be purged across a whole world today. This PR accepts a radius when the purge is already limited to co_block rows with i: or a:kill, for example /co purge t:30d r:50 i:zombie. r:50x10 also limits the height.

  • The radius becomes an x/y/z range in the co_block condition. co_entity rows are purged through the kill rows they belong to, so no entity data is orphaned. The existing (wid,x,z,time) index covers the range, so no schema change is needed.
  • Other tables are left untouched, as with any restricted purge. A radius without i: or a:kill is still rejected, because upstream appears to reject world-wide radius purges on purpose.
  • WorldEdit selections, radius purges on ClickHouse, and a numeric radius from the console are rejected.

PR 6 also depends on PR 1b and contains its commit. PR 6 replaces the blanket radius rejection, so it keeps its own check that rejects a numeric radius from the console.

Tests (local, not committed): with kills at several coordinates, a 50-block radius deletes only the zombie kills inside it and their entity data. A radius centered 1000 blocks away deletes nothing, and a height limit above the kills deletes nothing. a:kill with a radius deletes every kill inside it. The tests passed on SQLite, DuckDB and MySQL 8. With the radius bounds removed, all five radius tests fail.

co_entity has no world column, so /co purge r:#world deleted the kill
rows in co_block but kept every co_entity row. Those blobs became
orphans that no later purge removed.

- SQLite: copy only the co_entity rows that a retained kill row still
  references. This also drops orphans left by earlier purges.
- MySQL/DuckDB: delete the co_entity rows of the kill rows a world purge
  removes, before co_block is purged. MySQL uses a join so MariaDB and
  MySQL 5.7 do not run a dependent subquery. Global purges keep the
  cheaper time-based delete, which is equivalent. If MySQL stops between
  the two deletes, running the same purge again removes the remaining
  kill rows.

Player kills use the kill action with type 0 and a user id in data, so
they are never treated as co_entity references.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PdEuKbjcVoVinVQJq4te1f
On SQLite, /co purge r:#world i:<block> built the retain condition for
world-scoped tables without checking the block restriction, so it purged
co_container, co_chat and the other world-scoped tables in that world
although a block restriction should leave them untouched. The
entity_container/entity_interaction branch and the MySQL path already
check it.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PdEuKbjcVoVinVQJq4te1f
MySQL deletes in place, so co_entity rows orphaned by earlier world
purges stay until something removes them. With #optimize, delete every
co_entity row that no kill row references, through a temporary table of
referenced ids (avoids an anti-join on the unindexed co_block.data), then
let OPTIMIZE reclaim the space. Failures are reported like the table
loop, so the entity_spawn link cleanup still runs.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PdEuKbjcVoVinVQJq4te1f
/co purge rejects a numeric radius, but the check only saw the radius
when the sender had a location. From the console, /co purge t:30d r:50
parsed no radius and no world, so it ran as a server-wide purge. The
radius is now also parsed against a placeholder location, so it is
rejected for every sender. r:#world is unaffected.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PdEuKbjcVoVinVQJq4te1f
PurgeFilter now builds the purge condition for every table, and the
SQLite copy, the SQLite recovery path and the MySQL/DuckDB delete all use
it instead of three hand-built copies. Behavior is unchanged; the block
restriction check that the previous commit added to the SQLite copy is
part of the shared condition.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PdEuKbjcVoVinVQJq4te1f
/co purge rejected entity types and actions, so mob farm kill logs could
only be removed together with all other data. New arguments on SQLite,
MySQL and DuckDB:

- a:kill purges only entity kill rows.
- i:<entity> purges kills of those entity types; it can be combined with
  block types.
- e:<entity> keeps kills of those entity types while purging the rest.

Each purged kill also removes its co_entity row. a:kill with block types,
entity types in both i: and e:, e: with only block types in i:,
non-entity exclusions and entity filters on ClickHouse are rejected. Any
a: value other than a kill alias is rejected instead of falling through
to an unrestricted purge.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PdEuKbjcVoVinVQJq4te1f
/co purge rejected any numeric radius, so kills of one entity type could
only be purged across a whole world. A radius is now accepted when the
purge is restricted to co_block rows with i: or a:kill, for example
/co purge t:30d r:50 i:zombie. r:50x10 also limits the height.

The radius becomes an x/y/z range in the co_block condition. co_entity
rows follow the purged kill rows, so no entity data is orphaned, and the
(wid,x,z,time) index already covers the range. Other tables are left
untouched, as with any restricted purge.

Rejected: a radius without i: or a:kill, WorldEdit selections, radius
purges on ClickHouse, and a numeric radius from the console (it has no
location, as in the console radius fix merged into this branch).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PdEuKbjcVoVinVQJq4te1f
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