docs: VTank requirements research - the plugin-automation milestone model

User-requested (2026-07-29): the plugin API must eventually support
VTank-class automation state machines written as acdream plugins. The
research decodes the full Virindi Tank surface from wiki archives and
primary source (the meta FSM''s complete condition/action vocabulary and
.met encodings, the expression language''s 67-function catalog, all ten
nav-point types with .nav wire payloads, VTClassic''s loot-rule type ids
and .utl format), derives the implied host API surface, and grounds it
against acdream: the K2 headless-bot triad is already the right
substrate, the VTank-like engine itself belongs in plugin-land, and the
milestone is a 5-step bridge/query/enchantment/transaction/nav sequence
where steps 2-4 ride on landed M3/M4 work. Filed in the post-Vulkan
intake as a C-bucket milestone candidate.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This commit is contained in:
Erik 2026-07-29 16:29:49 +02:00
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@ -32,6 +32,7 @@ once Campaign V closes.
| **In-game map button** | Dereth map UI from DAT map art + player-position overlay; retail's MapView panel via LayoutDesc. |
| **Chatbox cleanup — colors and text** | `memory/reference_retail_chat_colors.md` holds exact retail RGBA values captured via cdb from live retail memory — the color half is research-done, implementation-pending. Text half: font/wrapping/timestamp fidelity vs retail. |
| **Missing commands (/ah and more)** | Inventory the retail slash-command surface (named-retail has the command table), diff against `LiveCommandBus`'s registered set, implement by demand-order from the user's play. |
| **Plugin automation milestone (VTank-class)** — user-sourced 2026-07-29 | The plugin API's north star: users write automation state machines as acdream plugins with Virindi Tank-class power. Requirements research complete: [`docs/research/2026-07-29-vtank-plugin-automation-requirements.md`](../research/2026-07-29-vtank-plugin-automation-requirements.md) — full VTank capability inventory (meta FSM condition/action vocabulary, expressions, nav-point types, VTClassic loot-rule encodings), the implied API surface, and a 5-step dependency-ordered milestone shape. Key finding: the K2 headless-bot triad is already the right substrate; step 1 is bridging it into the BCL-only Plugin.Abstractions; the VTank-like engine itself then lives as a plugin (potentially `.met`/`.nav`/`.utl` file-compatible). Steps 24 ride on landed M3/M4 work; only the nav/move-to layer is genuinely new machinery. |
## Suggested sequencing notes (for the roadmap discussion, not binding)

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# Virindi Tank as the requirements model for acdream's plugin-automation milestone
User-requested research (2026-07-29): the plugin API's north star is that a user
can write automation state machines as acdream plugins with VTank-class power
(the famous Decal automation plugin for original AC —
http://virindi.net/wiki/index.php/Virindi_Tank). The live wiki is effectively
unreachable (self-signed TLS; the HTTP wiki returns a database error); this
report was built from Wayback Machine snapshots of the wiki pages plus primary
source code (metaf's .met/.nav encodings, VTClassic's loot-rule classes) —
full citation list at the end.
**The architectural conclusion up front:** VTank's meta state machine,
expression language, and loot-rule engine are PLUGIN-land, not host-land —
VTank built them on Decal's primitives. acdream's milestone ships the
*primitive* layer; a VTank-compatible meta/nav/loot engine can then be an
acdream plugin — even file-compatible with `.met`/`.nav`/`.utl`, all of whose
encodings are decoded below. And the K2 headless-bot triad
(`Tick(IGameRuntimeView, IGameRuntimeCommands)` + `IRuntimeEventObserver`)
is already exactly the right substrate: synchronous borrowed reads,
generation-gated typed commands with attempt semantics, an ordered delta
stream. The milestone is largely a bridging + query-surface exercise, not a
new architecture.
---
## 1. Capability inventory
### 1.1 Combat macro
- **Attack styles:** melee, missile, mage, full hybrid templates; two-handed;
Void; Summoning; harm/martyr mage mode; alchemical grenades; lenses;
cast-on-strike debuffing weapons; war/void streak spells. VTank
auto-selects the best attack type from the configured weapon list (Items
tab: wands/melee/missile/shields/pets, per-monster weapon+offhand
overrides).
- **Target selection:** per-monster priority -1 (ignore) through 04;
`TargetSelectMethod` = by range / by angle / both (angle when near, range
beyond `TargetSelectAngleRange`); `TargetLock`; blacklisting of unhittable
targets (`BlacklistMonsterAttemptCount`/`TimeoutSeconds`); ghost-monster
detection two ways (N failed cast starts, or no HP updates for N seconds)
with a forced client-side delete.
- **Monster list = a rule table, first-match-wins after DEFAULT**, keyed by
name or by monster expressions over: `true, false, name, typeid, species,
maxhp, range (dynamic), hasshield (dynamic), setting_<OptionName>
(dynamic), metastate (dynamic)` with a full operator set
(`( ) % / * + - # != == > < >= <= && ||` and `\` escape; `#` is
regex-match). Per-entry action matrix: Fester, Broadside, Gravity Well,
Imperil, Yield, Vuln, Attack, Ring, Streak, void curses (WC/FC/Cp/DC/Cs),
damage type (or `<Auto>`), extra vuln element, weapon/offhand/pet damage
type per monster.
- **Debuff sequencing:** `DebuffEachFirst` = one / same-priority-group /
all-before-attacking; `DebuffSelectionMethod` = by spell level or by
(buffed) skill; `DebuffPrecastSeconds` re-application window;
`SwitchWandToDebuff`.
- **AoE logic:** ring when ≥ `MinimumRingTargets` within `RingDistance`;
arcs over bolts beyond `ArcRange`.
- **Melee specifics:** attack height (high/mid/low), auto attack-power by
weapon damage type, power-bar slider (`/vt setattackbar 0..1`),
recklessness, multi-step weapon-swap state machine with peace-mode retry
counting (`/vt equipitemsfor <monster>` executes one step per call).
- **Pets:** summon when ≥ `PetMonsterDensity` targets within pet range;
per-monster pet element; idle/combat refill thresholds; `/vt testpet`.
### 1.2 Buffing engine
- Auto-buffs every trained attribute/skill plus protections and banes —
derived from the character's skills, spellbook, and available components
(the Buffs tab only adds untrained-skill buffs or exclusions). Prot/bane
sets `All/None/B/BPS/BPSA/ALFC/Custom` via `BuffProfile_Prots`/`_Banes`.
- Rebuff below 5 minutes remaining (`RebuffTimeRemainingSeconds`); idle
early-rebuff (`IdleBuffTopoff`); force-buff/cancel; level 8s; item-buff
durations persisted across logins; buffing with consumables (items under
5-minute duration rejected).
- Skill gating with signed thresholds `SpellDiffExcessThreshold-Buff/-Hunt`
(negative = attempt above-skill spells) — exposed to expressions as
`getcancastspell_buff/hunt` (scarab count + buffed skill + spellbook).
### 1.3 Vitals / heal / restam management
- Three recharge tiers, each per-vital: in-combat trigger percentages
(`Recharge-Norm-*`), idle top-off (`Recharge-NoTarg-*`), and fellowship
helper (`Recharge-Helper-*` + per-vital max distances; requires fellow
panel open or a VI2 fellowship).
- Healing kits (minimum success chance, optional drop-to-peace first),
stamina→health and mana→health spell multipliers, post-switch recharge
boost, Healer's Heart support.
- Dispel-on-vuln: detects a level-7 vuln landing and responds with dispel
gems/potions and/or Eradicate self.
### 1.4 Inventory upkeep and crafting
AutoStack (stack toward bottom-most so the partial stack burns first),
AutoCram (main pack → side packs), pea splitting with three priority tiers,
auto-crafting consumables (kits, foods, arrowheads, special ammo), mana-stone
economy (loot stones to a count, fill from loot above a mana floor, drain
onto worn items at a refill percentage, even while the macro is off),
lockpicks for auto-picking doors with a skill-vs-difficulty threshold.
### 1.5 Looting — VTClassic and the loot-plugin seam
VTank's looting is plugin-based: the host macro does corpse
approach/open/wait; a loot plugin classifies each item (VTClassic canonical;
Alinco3/GearFoundry use the same uTank2 LootPlugins seam). Macro-side knobs:
approach ranges, open retry + blacklist, `CorpseItemAppearanceTimeoutSeconds`
/ `CorpseItemIDTimeoutSeconds` (wait for items, then for IDs), loot
all/fellow/rares-only, priority boost, read-unknown-scrolls, salvage
combining per-profile workmanship ranges.
From VTClassic source: **profile = ordered rules; rule = name + action +
AND-ed requirements; first match classifies**, evaluated against the item's
retail appraisal property bags (LongValueKeys, DoubleValueKeys,
StringValueKeys, spell list — what `/vt propertydump` prints).
- **Actions (`eLootAction`):** `NoLoot=0, Keep=1, Salvage=2, Sell=3, Read=4,
User1User5=59, KeepUpTo=10`.
- **Requirement types (`eLootRuleType`):** `SpellNameMatch(0),
StringValueMatch(1), LongValKeyLE(2), LongValKeyGE(3), DoubleValKeyLE(4),
DoubleValKeyGE(5), DamagePercentGE(6), ObjectClass(7), SpellCountGE(8),
SpellMatch(9), MinDamageGE(10), LongValKeyFlagExists(11), LongValKeyE(12),
LongValKeyNE(13)`; armor color: `AnySimilarColor(14),
SimilarColorArmorType(15), SlotSimilarColor(16), SlotExactPalette(17)`;
character-state: `CharacterSkillGE(1000),
CharacterMainPackEmptySlotsGE(1001), CharacterLevelGE(1002),
CharacterLevelLE(1003), CharacterBaseSkill(1004)`; computed buffed-value:
`BuffedMedianDamageGE(2000), BuffedMissileDamageGE(2001),
BuffedLongValKeyGE(2003), BuffedDoubleValKeyGE(2005),
CalcdBuffedTinkedDamageGE(2006), TotalRatingsGE(2007),
CalcedBuffedTinkedTargetMeleeGE(2008)`.
- The buffed/calced family means the loot engine needs the character's
current buffed skills and tinkering math, not just item properties; color
rules need item palette data.
- `.utl` file: text — `UTL` header, version, rule count, rule blocks, extra
blocks (salvage-combine workmanship ranges like `1-5,6-7,8,9,10`).
### 1.6 Navigation
Route types (`NavTypeID`): **Circular=1** (ABC-ABC, enter at closest point),
**Linear=2** (ABC-CBA ping-pong), **Follow=3** (chase a named player;
`FollowAroundCorners` = replay leader's path vs run straight),
**Once=4** (points consumed as reached; runback routes).
Nav point vocabulary (`NTypeID` — the exact `.nav` wire order):
| Type | ID | Payload |
|---|---|---|
| Point | 0 | x, y, z |
| Portal (deprecated) | 1 | x, y, z, portal GUID |
| Recall | 2 | x, y, z, exact recall-spell name (fixed ~30-entry list) |
| Pause | 3 | x, y, z, milliseconds |
| Chat | 4 | x, y, z, arbitrary chat/slash text |
| Open Vendor | 5 | x, y, z, vendor GUID, name |
| Use Portal/NPC | 6 | own x,y,z + target x,y,z + target ObjectClass + name |
| NPC Talk | 7 | same as 6 — use repeatedly until a tell is received |
| Checkpoint | 8 | x, y, z — wait for SERVER-confirmed position |
| Jump | 9 | x, y, z, heading, shift bool, charge ms (+strafe variant) |
`.nav` file: plain text, `uTank2 NAV 1.2` header, route-type int, node
count, node records (verified against a real route file). Runtime knobs:
arrival radius (`NavCloseStopRange`), off-course abort (`NavFarStopRange`),
nav-before-combat priority boost, door opening en route, reverse-route.
Routes embed inside meta files (metaf EmbedNav, optional transform).
### 1.7 Fellowship behaviors
Auto-recruit on tell, waiting-list management, leader queries, AFK-leader
replacement votes — all via chat tells. Plus helper healing (1.3),
fellow-corpse looting, and (via Virindi Integrator 2) out-of-band fellow
coordination (prefer already-vulned targets, avoid double-vulning).
### 1.8 The Meta system — the state machine
Named **states** (start = "Default"); **rule = (state, condition, action)**;
rules checked only in their state; each rule fires once per state entry
(re-armed by re-entry). Conditions evaluated ~every 293 ms plus whenever the
macro decides what to do next. **Call stack**: Call Meta State pushes a
return state, Return From Call pops (empty stack = error + meta disabled).
**Watchdog**: per-state "if not moved ≥ distance in N seconds, call state S."
**Conditions** (`CTypeID` 028): `Never(0), Always(1), All(2), Any(3)`
(nesting combinators), `ChatMatch(4)` regex, `MainSlotsLE(5)`,
`SecsInStateGE(6)`, `NavEmpty(7)`, `Death(8)`, `VendorOpen(9)`,
`VendorClosed(10)`, `ItemCountLE(11)/GE(12)`, `MobsInDist_Name(13)` (count,
distance, name-regex), `MobsInDist_Priority(14)`, `NeedToBuff(15)`,
`NoMobsInDist(16)`, `BlockE(17)`, `CellE(18)`, `IntoPortal(19)/
ExitPortal(20)`, `Not(21)`, `PSecsInStateGE(22)` (persistent timer),
`SecsOnSpellGE(23)` (enchantment time remaining), `BuPercentGE(24)` burden,
`DistToRteGE(25)`, `Expr(26)`, `ChatCapture(28)` — regex with named capture
groups saved to variables (`capturegroup_<name>`, `capturecolor`) plus
chat-color filtering.
**Actions** (`ATypeID` 015): `None(0), SetState(1), Chat(2)` (the universal
escape hatch — `/vt` commands, tells, other plugins), `DoAll(3)`,
`EmbedNav(4)`, `CallState(5), Return(6), DoExpr(7), ChatExpr(8)`,
`SetWatchdog(9), ClearWatchdog(10), GetOpt(11)/SetOpt(12)` (read/write ANY
host option — the macro reconfigures itself), `CreateView(13),
DestroyView(14), DestroyAllViews(15)` — **Meta Views**: XML-defined control
panels (controls with `actionexpr`/`setstate` attributes) so a meta ships
its own UI.
### 1.9 Meta Expressions — the scripting language
Numbers (doubles; booleans 0/1), strings, objects (coordinates, world
objects, stopwatches, view controls). Operators by precedence:
`\ ( ) % / * + - #`(regex)` != == > < >= <= && || ^ ;`. Variables persist to
relog (`setvar/getvar/testvar/touchvar/clearvar/clearallvars`). 67 functions
documented in the 2016 snapshot (UtilityBelt's compatible dialect grew it to
~200):
- **Raw property reads by retail key id:** `getcharintprop, getchardoubleprop,
getcharquadprop, getcharboolprop, getcharstringprop` (wiki ships key
tables: Level=25, Deaths=43, augmentations 218328, luminance auras 333+,
TotalExperience quad 1, FellowshipName string 10, …).
- **Vitals/skills:** `getcharvital_base/current/buffedmax(1|2|3)`,
`getcharskill_traininglevel/base/buffed(skillId)`.
- **Spells:** `getisspellknown, getcancastspell_hunt, getcancastspell_buff`.
- **Location:** `getplayerlandcell`, `getplayercoordinates` (from the
PHYSICS prediction model), coordinate objects
(`coordinategetns/getwe/getz/tostring/parse`,
`coordinatedistancewithz/distanceflat`).
- **World-object queries:** `wobjectgetphysicscoordinates, wobjectgetname,
wobjectgetobjectclass, wobjectgettemplatetype, wobjectgetisdooropen,
wobjectfindnearestmonster, wobjectfindnearestdoor,
wobjectfindnearestbyobjectclass, wobjectfindnearestbynameandobjectclass,
wobjectfindininventorybytemplatetype/byname/bynamerx, wobjectgetselection,
wobjectgetplayer` — ObjectClass enum 043 (Monster=5, Portal=14,
Corpse=27, Npc=37, Salvage=39, Ust=40, Scroll=42, CombatPet=43).
- **Action functions (async attempt semantics — 0 not-yet / 1 begun / 2
impossible):** `actiontryselect, actiontryuseitem, actiontryapplyitem,
actiontrygiveitem, actiontryequipanywand, actiontrycastbyid,
actiontrycastbyidontarget`.
- **Chat/UI:** `chatbox, chatboxpaste, statushud, statushudcolored,
uigetcontrol, uisetlabel`.
- **Utility:** `iif, istrue/isfalse, randint, cstr/cstrf/cnumber, strlen,
floor/ceiling/round/abs, stopwatch*, getobjectinternaltype`.
- Testing: `/vt mexec <expr>`, `/vt listmetafunctions`, `/vt metafunchelp`.
### 1.10 Commands, profiles, files
`/vt` surface: per-subsystem profile save/load (`settings|nav|loot|meta`,
per-character variants), `opt list/get/set/setinall` (every internal
variable scriptable), macro start/stop, forcebuff, setmetastate, fakedeath
(test hook), testitem (dry-run loot classification), propertydump,
testmonster, testspell, getdb (spell/species/material tables), nav editing
(`addnavpt/addnavjump/addnavcheckpoint/reverseroute`), jump/tapjump/
setattackbar, dump commands, typed debug logging channels. Persistence:
profile directory with `.settings` (global + `[Char]`), `.nav`, `.utl`,
`.met`; every UI change auto-saves; all four profile kinds hot-loadable from
chat/meta (how metas compose: `/vt nav load runback`).
### 1.11 The companion-plugin bundle
VTClassic looter + out-of-game rule editor; Virindi Integrator 2
(account-based cross-world groups/tells, fellow coordination); Reporter;
Chat System 5 (rule-based chat filter/recolor/sounds); Item Tool (bulk give,
buy/sell, mule transfer, comp purchasing — other plugins call into it);
Follower; HUDs (status HUD writable from expressions, VTank remote, vitals
bars); Hotkey System; Sense (spawn alerts); Window Tool; Global Inventory
(cross-character item index); GoArrow; SSSort. Ecosystem: metaf (text ↔
.met/.nav compiler), UtilityBelt (modern superset). Multi-account
orchestration is built on metas + chat tells — no special API.
---
## 2. The implied plugin-API surface
**Game-state reads:** (1) world-object table with full property bags — id,
name, ObjectClass-style classification, weenie/template type, PHYSICS
position, heading/distance, container/wielder links, door state, vendor
identity; query verbs (nearest-by-class, name-regex+class, in-range counts,
inventory filters). (2) appraisal surface — per-object retail property bags
(int/bool/double/string/quad + spell list + palette + material/workmanship),
ID-request command + ID-arrived event. (3) character sheet — vitals
(base/current/buffed max), skills (training/base/buffed), burden, pack
slots, level/XP/luminance, augmentations, spellbook, component counts.
(4) enchantment table with remaining seconds per spell id (+item-buff timers
persisted). (5) spatial identity — landblock/landcell, portalspace flag,
coordinate conversions. (6) target combat state — per-monster HP stream,
equipment reads. (7) fellowship state. (8) vendor/trade state.
**Commands (attempt semantics + busy arbitration):** select, examine/ID, use
object, use X on Y, give to NPC/player, loot specific item from container,
salvage, read scroll, equip weapon-set (multi-step), combat mode +
height/power, attack, cast (self/on-target) with pre-flight checks, move-to
/ follow, jump(heading, shift, charge, strafe), vendor open + buy/sell,
split/stack/move items, lockpick, chat injection, and runtime option get/set
on the automation host itself.
**Events:** chat (channel/color, capture-friendly), death, vendor
open/close, portalspace enter/exit, cast begun/landed/fizzled (and
never-started), item appeared on corpse, ID arrived, target HP update,
server-confirmed position (checkpoint semantics), nav arrival, fellowship
changes.
**Scheduling & persistence:** ~3 Hz decision tick interleaved before the
host's own arbitration; subsystem priority (heal > combat > nav > loot with
boosts); per-subsystem hot-loadable profiles (global + per-character); a
persisted per-character key/value store.
**UI:** declarative runtime panels (markup), button → action/state bindings,
a writable status-HUD channel.
---
## 3. Mapping to acdream today
**Already-strong seams:** the K2 headless triad (`IHeadlessBotPolicy.Tick`
(view, commands) + `IRuntimeEventObserver`) is precisely the loop a
VTank-class engine needs — synchronous borrowed reads, generation-gated
typed commands (`RuntimeCommandResult` ≈ VTank's attempt semantics), ordered
delta stream (VTank's 293 ms meta tick maps onto Tick). Event coverage
already spans lifecycle, command receipts, entity, inventory, chat, movement,
portal deltas (IntoPortal/ExitPortal fall out for free), combat. Command
coverage: Selection/Combat/Magic/Movement/Chat/Portal/Spellbook/Character/
Social. Character reads: vitals/attributes/skills incl. FormulaBonus (≈
buffed), KnowsSpell; the enchantment registry exists Runtime-side (M3).
`IUiRegistry.AddMarkupPanel` is already a better-typed Meta Views.
**The gap:** `AcDream.Plugin.Abstractions` today exposes only `IPluginHost
{ Log, State (4-field entity snapshots), Events (EntitySpawned), Selection,
Ui }`. Everything VTank-class lives Runtime-side but is not plugin-visible:
| Cluster | Status |
|---|---|
| Bot loop (tick+commands+ordered events) | Exists (K2); not bridged to plugins |
| Entity queries w/ classification/name/distance | Deltas exist; snapshots lack name/class/type; no query verbs |
| Property bags / appraisal | M4 Slices 13 landed assessment client-side; no plugin surface |
| Enchantment table w/ remaining time | State exists (M3); no enumerating view |
| Cast-on-target with outcome events | Command exists; outcomes implicit only |
| Use/apply/give/loot-item/salvage/vendor | Use+PickUp exist; vendor = M4 Slices 56 in flight; apply/give absent |
| Move-to / follow / jump / routes | Absent — movement is WASD-intent-shaped; no point-goal primitive |
| Fellowship state | Not in Runtime views yet |
| Plugin persistence/options | Untyped (plugins can own files; low urgency) |
---
## 4. Milestone shape — dependency-ordered API additions
1. **Plugin↔Runtime bridge (the enabler):** mirror the K2 triad into
BCL-only Plugin.Abstractions — per-plugin `Tick(view, commands)`,
generation-gated command groups, ordered event observer. Upgrades plugins
to headless-bot parity; chat in/out unlocks the VTank composition idiom.
2. **Entity/property query surface:** enrich plugin entity snapshots
(name/class/weenie type/physics position); query verbs; per-object
property bags in the retail key space; ID-request command + ID-arrived
event. Rides on the landed M4 assessment work.
3. **Spell/enchantment surface:** enumerable active enchantments (spell id,
layer, seconds remaining), can-cast prediction (components + skill vs
difficulty — the `getcancastspell` pair), explicit cast-on-target,
cast-outcome events.
4. **Interaction/transaction commands:** use-by-id, apply-on, give,
container take-specific, salvage, vendor buy/sell — over the existing
one-transaction gate, with receipts as events. After M4 Slices 46.
5. **Nav/move-to layer:** point-goal movement with arrival/stuck/off-course
events + a server-confirmed-arrival variant (checkpoint semantics;
position-ack tracking exists), follow-entity, jump. The route types and
nav-point vocabulary are then pure plugin data; optional `.nav` import.
(1) gates everything; (2)/(3) independent after (1); (4) depends on M4's
in-flight slices; (5) last — route automation needs combat/loot reads to
decide when to move.
---
## Sources
Wiki content via Wayback Machine snapshots (live site: self-signed TLS /
database error): Virindi_Tank (rev. 2024-01-12), Virindi_Tank_Meta_System,
Meta_Expressions, Meta_ChatMessageCapture_Condition, Meta_Views,
Virindi_Tank_Commands, Virindi_Tank_Standard_Options,
Virindi_Tank_Advanced_Options, Virindi_Tank_Monster_List_Matching,
Virindi_Tank_Fellowship_Commands, BeginnerBundleGuide, VTClassic_Tutorial,
Virindi_Tank_Changelog — all under
`http://www.virindi.net/wiki/index.php/…`.
Code/format ground truth: `github.com/JJEII/metaf` (CTypeID/ATypeID/
NavTypeID/NTypeID encodings + metafReference.af payload tables);
`github.com/leo-duran/virindi-public-clone` (VTClassic `LootRules.cs`);
`github.com/aquafir/ACE.BaseMod` (vendored `eLootAction`);
`github.com/lino-ranta/vtank-routes` + `vtank-loot-profiles` (on-disk `.nav`
/ `.utl` verification); `utilitybelt.gitlab.io/docs` (modern ecosystem).
acdream grounding: `src/AcDream.Plugin.Abstractions/*`,
`src/AcDream.Runtime/GameRuntime{Commands,Events,Views,GameplayViews}.cs`,
`src/AcDream.Headless/Policies/HeadlessBotPolicy.cs`.