2026 06 21 Compression Phase2 Named Profiles Plan

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Compression Phase 2 — Named Profiles + Active Selector Implementation Plan

For agentic workers: REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (- [ ]) syntax for tracking.

Goal: Wire CompressionConfig.activeComboId into the runtime and give the operator a single active-profile selector (Default-from-panel | a named combo) on the Combos page, removing the now-duplicate "master mode selector" and "Set as Default" controls.

Architecture: The resolver already has the model; Phase 2 (a) lifts the active-combo resolution into resolveBasePlan (so it applies regardless of enginesExplicit, above auto-trigger, below a routing-combo override), threading a combos map through selectCompressionPlan/selectCompressionStrategy; (b) chatCore loads named combos via listCompressionCombos() and passes them in, and guards the legacy default-combo block so it can't shadow an active profile; (c) the UI adds an active-profile selector + read-only preview to CompressionHub (removing the master toggle / mode selector / reorder) and removes "Set as Default" from NamedCombosManager (adding an "● Active" badge). No new API endpoints or DB migrations.

Tech Stack: TypeScript, Next.js 16 App Router, SQLite (better-sqlite3), Node test runner + Vitest (component), React.

Base: worktree feat/compression-phase2-named-profiles off release/v3.8.32. Spec: docs/compression/2026-06-21-compression-phase2-named-profiles-design.md.

Conventions: unit tests run node --import tsx/esm --test tests/unit/<f>.test.ts; component tests run npx vitest run <file>. Each task ends by running the FULL compression suite (node --import tsx/esm --test tests/unit/compression/*.test.ts) + npm run typecheck:core before commit. Never --no-verify. Both UI files (CompressionHub.tsx, CompressionCombosPageClient.tsx) deliberately use literal English strings, NOT useTranslations — so vitest component tests can assert on those strings directly.

File Structure

Modify:

open-sse/services/compression/strategySelector.ts — thread a combos param through resolveBasePlan/selectCompressionPlan/selectCompressionStrategy/getEffectiveMode; resolve the active combo in resolveBasePlan; export activeComboResolves().
open-sse/handlers/chatCore.ts — load named combos, pass them to the two selectCompression* calls, guard the legacy default-combo block with !activeComboResolves(...).
src/app/(dashboard)/dashboard/context/combos/CompressionHub.tsx — remove master toggle / mode selector / reorder; add the active-profile selector + preview.
src/app/(dashboard)/dashboard/context/combos/CompressionCombosPageClient.tsx — remove setDefault + "Set as Default" button; add the "● Active" badge from activeComboId.

Create (tests):

tests/unit/compression/active-combo-dispatch.test.ts
tests/unit/compression/active-combo-integration.test.ts
tests/unit/ui/compressionHub-active-selector.test.tsx
tests/unit/ui/namedCombos-active-badge.test.tsx

Reference types: CompressionPipelineStep = { engine: CompressionEngineId; intensity?: CavemanIntensity | RtkIntensity; config?: Record<string, unknown> } (in open-sse/services/compression/types.ts). DerivedPlan = { mode: string; stackedPipeline: Array<{ engine: string; intensity?: string }> } (in deriveDefaultPlan.ts).

Task 1: Dispatch — resolve the active combo + thread `combos`

Files:

Modify: open-sse/services/compression/strategySelector.ts
Test: tests/unit/compression/active-combo-dispatch.test.ts
Step 1: Write the failing test at tests/unit/compression/active-combo-dispatch.test.ts

import { describe, it } from "node:test";
import assert from "node:assert/strict";
import {
  selectCompressionStrategy,
  selectCompressionPlan,
  activeComboResolves,
} from "../../../open-sse/services/compression/strategySelector.ts";
import {
  DEFAULT_COMPRESSION_CONFIG,
  type CompressionConfig,
} from "../../../open-sse/services/compression/types.ts";

const combos = { c1: [{ engine: "rtk", intensity: "standard" }, { engine: "caveman", intensity: "full" }] };

function cfg(overrides: Partial<CompressionConfig> = {}): CompressionConfig {
  return { ...DEFAULT_COMPRESSION_CONFIG, enabled: true, ...overrides };
}

describe("active named combo resolution (Phase 2)", () => {
  it("activeComboId + combo present => that combo's stacked pipeline (regardless of enginesExplicit)", () => {
    const config = cfg({ activeComboId: "c1", enginesExplicit: false });
    const plan = selectCompressionPlan(config, null, 0, undefined, undefined, combos);
    assert.equal(plan.mode, "stacked");
    assert.deepEqual(plan.stackedPipeline, combos.c1);
  });
  it("activeComboId null => falls through to derived default (not the combo)", () => {
    const config = cfg({ activeComboId: null, enginesExplicit: true, engines: { rtk: { enabled: true } } });
    assert.equal(selectCompressionStrategy(config, null, 0, undefined, undefined, combos), "rtk");
  });
  it("activeComboId set but combo missing => graceful fall-through to default", () => {
    const config = cfg({ activeComboId: "ghost", defaultMode: "lite", enginesExplicit: false });
    assert.equal(selectCompressionStrategy(config, null, 0, undefined, undefined, combos), "lite");
  });
  it("routing-combo override wins over the active profile", () => {
    const config = cfg({ activeComboId: "c1", comboOverrides: { "my-combo": "off" } });
    assert.equal(selectCompressionStrategy(config, "my-combo", 0, undefined, undefined, combos), "off");
  });
  it("active profile wins over auto-trigger", () => {
    const config = cfg({ activeComboId: "c1", autoTriggerTokens: 1000, autoTriggerMode: "aggressive" });
    assert.equal(selectCompressionStrategy(config, null, 5000, undefined, undefined, combos), "stacked");
  });
});

describe("activeComboResolves", () => {
  it("true only when activeComboId is set AND present in combos", () => {
    assert.equal(activeComboResolves(cfg({ activeComboId: "c1" }), combos), true);
    assert.equal(activeComboResolves(cfg({ activeComboId: "ghost" }), combos), false);
    assert.equal(activeComboResolves(cfg({ activeComboId: null }), combos), false);
  });
});

Step 2: Run → FAIL (node --import tsx/esm --test tests/unit/compression/active-combo-dispatch.test.ts) — activeComboResolves not exported / combos arg ignored.
Step 3: Implement in strategySelector.ts. Add the CompressionPipelineStep type import (it's already imported from ./types.ts in most cases — confirm; if not, add it). Define the combos type alias near the top after imports:

type NamedCombos = Record<string, CompressionPipelineStep[]>;

Change resolveBasePlan to accept combos and resolve the active combo after the routing-combo override, before auto-trigger:

function resolveBasePlan(
  config: CompressionConfig,
  comboId: string | null,
  estimatedTokens: number,
  combos: NamedCombos = {}
): DerivedPlan {
  if (!config.enabled) return { mode: "off", stackedPipeline: [] };

  const comboMode = checkComboOverride(config, comboId);
  if (comboMode) {
    return resolveCompressionPlan(config, { comboId, combos });
  }

  // Active profile: an EXPLICIT operator choice. Resolves regardless of enginesExplicit and
  // above auto-trigger (manual choice beats automatic escalation), but below a routing-combo
  // override (route-scoped is more specific).
  if (config.activeComboId && combos[config.activeComboId]) {
    return { mode: "stacked", stackedPipeline: combos[config.activeComboId] };
  }

  if (shouldAutoTrigger(config, estimatedTokens)) {
    const mode = config.autoTriggerMode ?? "lite";
    return mode === "stacked"
      ? { mode, stackedPipeline: config.stackedPipeline ?? [] }
      : { mode, stackedPipeline: [] };
  }

  return deriveDefaultPlanFromConfig(config, comboId, combos);
}

Add the combos param to deriveDefaultPlanFromConfig and pass it to its resolveCompressionPlan call:

function deriveDefaultPlanFromConfig(
  config: CompressionConfig,
  comboId: string | null,
  combos: NamedCombos = {}
): DerivedPlan {
  if (config.enginesExplicit) {
    return resolveCompressionPlan(config, { comboId, combos });
  }
  const legacyMode = config.defaultMode;
  if (legacyMode && legacyMode !== "off") {
    return legacyMode === "stacked"
      ? { mode: legacyMode, stackedPipeline: config.stackedPipeline ?? [] }
      : { mode: legacyMode, stackedPipeline: [] };
  }
  return { mode: "off", stackedPipeline: [] };
}

Add combos as a trailing param to getEffectiveMode, selectCompressionPlan, selectCompressionStrategy and thread it down. Final signatures + bodies:

export function getEffectiveMode(
  config: CompressionConfig,
  comboId: string | null,
  estimatedTokens: number,
  combos: NamedCombos = {}
): CompressionMode {
  return resolveBasePlan(config, comboId, estimatedTokens, combos).mode as CompressionMode;
}

export function selectCompressionPlan(
  config: CompressionConfig,
  comboId: string | null,
  estimatedTokens: number,
  body?: Record<string, unknown>,
  context?: CachingDetectionContext,
  combos: NamedCombos = {}
): DerivedPlan {
  const plan = resolveBasePlan(config, comboId, estimatedTokens, combos);
  if (body) {
    const ctx = detectCachingContext(body, context);
    const cacheAware = getCacheAwareStrategy(plan.mode as CompressionMode, ctx);
    return { ...plan, mode: cacheAware.strategy as CompressionMode };
  }
  return plan;
}

export function selectCompressionStrategy(
  config: CompressionConfig,
  comboId: string | null,
  estimatedTokens: number,
  body?: Record<string, unknown>,
  context?: CachingDetectionContext,
  combos: NamedCombos = {}
): CompressionMode {
  return selectCompressionPlan(config, comboId, estimatedTokens, body, context, combos).mode as CompressionMode;
}

Add the exported helper (near enginesMapDerivesStackedPipeline):

/**
 * True when the config has an active named-combo selection that exists in the supplied combos
 * map. chatCore uses this to keep the legacy default-combo fallback from shadowing the
 * operator's active profile (same class of bug as the #4023 web-cookie shadowing).
 */
export function activeComboResolves(config: CompressionConfig, combos: NamedCombos = {}): boolean {
  return Boolean(config.activeComboId && combos[config.activeComboId]);
}

If CompressionPipelineStep is not already imported in strategySelector.ts, add it to the existing import { ... } from "./types.ts" (it is a type-only symbol).

Step 4: Run → PASS + full compression suite + npm run typecheck:core.
Step 5: Commit

git add open-sse/services/compression/strategySelector.ts tests/unit/compression/active-combo-dispatch.test.ts
git commit -m "feat(compression): resolve active named combo in dispatch (activeComboId)"

Task 2: chatCore — load named combos + guard the legacy block

Files:

Modify: open-sse/handlers/chatCore.ts (compression dispatch block, ~lines 1428–1690)
Test: tests/unit/compression/active-combo-integration.test.ts
Step 1: Write the failing integration test at tests/unit/compression/active-combo-integration.test.ts

import { test, after } from "node:test";
import assert from "node:assert/strict";
import fs from "node:fs";
import os from "node:os";
import path from "node:path";

const TEST_DATA_DIR = fs.mkdtempSync(path.join(os.tmpdir(), "omniroute-active-combo-"));
const ORIGINAL = process.env.DATA_DIR;
process.env.DATA_DIR = TEST_DATA_DIR;

const { getDbInstance, resetDbInstance } = await import("../../../src/lib/db/core.ts");
const combosDb = await import("../../../src/lib/db/compressionCombos.ts");
const { updateCompressionSettings } = await import("../../../src/lib/db/compression.ts");
const { selectCompressionPlan } = await import("../../../open-sse/services/compression/strategySelector.ts");
const { DEFAULT_COMPRESSION_CONFIG } = await import("../../../open-sse/services/compression/types.ts");

after(() => {
  resetDbInstance();
  fs.rmSync(TEST_DATA_DIR, { recursive: true, force: true });
  if (ORIGINAL === undefined) delete process.env.DATA_DIR;
  else process.env.DATA_DIR = ORIGINAL;
});

test("an active named combo's pipeline is what selectCompressionPlan resolves, fed from the DB combos map", async () => {
  resetDbInstance();
  getDbInstance();
  const created = combosDb.createCompressionCombo({
    name: "RTK only",
    pipeline: [{ engine: "rtk", intensity: "standard" }],
  });
  await updateCompressionSettings({ enabled: true, activeComboId: created.id });

  // Mirror chatCore's load: build the combos map from the DB.
  const combos = Object.fromEntries(combosDb.listCompressionCombos().map((c) => [c.id, c.pipeline]));
  const config = { ...DEFAULT_COMPRESSION_CONFIG, enabled: true, activeComboId: created.id };
  const plan = selectCompressionPlan(config, null, 5000, undefined, undefined, combos);
  assert.equal(plan.mode, "stacked");
  assert.deepEqual(plan.stackedPipeline, [{ engine: "rtk", intensity: "standard" }]);

  // Setting activeComboId did NOT change which combo is is_default (legacy untouched).
  const def = combosDb.getDefaultCompressionCombo();
  assert.notEqual(def?.id, created.id);
});

Step 2: Run → FAIL (the combos map is correct but confirms the wiring contract; if createCompressionCombo's default seeding makes the new combo default, adjust the assertion to read the seeded default-caveman id — verify by reading compressionCombos.ts). Run: node --import tsx/esm --test tests/unit/compression/active-combo-integration.test.ts.
Step 3: Implement in chatCore.ts. In the compression block, AFTER config is loaded and BEFORE the first selectCompressionStrategy call (line ~1602), load the named combos once:

      let namedCombos: Record<string, CompressionPipelineStep[]> = {};
      try {
        const { listCompressionCombos } = await import("../../src/lib/db/compressionCombos.ts");
        namedCombos = Object.fromEntries(listCompressionCombos().map((c) => [c.id, c.pipeline]));
      } catch (err) {
        log?.debug?.(
          "COMPRESSION",
          "Named combos load skipped: " + (err instanceof Error ? err.message : String(err))
        );
      }

Pass namedCombos as the 6th arg to BOTH selectCompressionStrategy (line ~1602) and selectCompressionPlan (line ~1668):

      const modeBeforeOutputTransform = selectCompressionStrategy(
        config,
        compressionComboKey,
        estimatedTokens,
        body as Record<string, unknown>,
        { provider, targetFormat, model: effectiveModel },
        namedCombos
      );

      const compressionPlan = selectCompressionPlan(
        config,
        compressionComboKey,
        estimatedTokens,
        compressionInputBody,
        { provider, targetFormat, model: effectiveModel },
        namedCombos
      );

Guard the legacy default-combo block (the if (modeBeforeOutputTransform === "stacked" && ... && !enginesMapDerivesStackedPipeline(config)) at line ~1609) so it does NOT fire when the active profile resolves — add enginesMapDerivesStackedPipeline is already imported; add activeComboResolves to the same import block (line ~1430) and add the guard term:

      const {
        selectCompressionStrategy,
        selectCompressionPlan,
        enginesMapDerivesStackedPipeline,
        activeComboResolves,                 // ← add
        applyCompressionAsync,
        resolveCacheAwareConfig,
      } = await import("../services/compression/strategySelector.ts");

      if (
        modeBeforeOutputTransform === "stacked" &&
        !compressionComboApplied &&
        !config.compressionComboId &&
        isBuiltinStackedPipeline(config.stackedPipeline) &&
        !enginesMapDerivesStackedPipeline(config) &&
        !activeComboResolves(config, namedCombos)   // ← add: never shadow the active profile
      ) {

The existing engines-map feed (line ~1680, if (mode === "stacked" && compressionPlan.stackedPipeline.length > 0 && !compressionComboApplied && !config.compressionComboId)) now ALSO feeds the active combo's pipeline into config.stackedPipeline (because compressionPlan.stackedPipeline is the active combo's when activeComboId resolves) — no change needed there. Confirm CompressionPipelineStep is imported in chatCore.ts (it is used by config.stackedPipeline); if not, add the type import.

Step 4: Run → PASS + full compression suite + npm run typecheck:core + npm run lint.
Step 5: Commit

git add open-sse/handlers/chatCore.ts tests/unit/compression/active-combo-integration.test.ts
git commit -m "feat(compression): chatCore loads named combos; legacy default combo can't shadow the active profile"

Task 3: UI — active-profile selector in CompressionHub (remove duplicates)

Files:

Modify: src/app/(dashboard)/dashboard/context/combos/CompressionHub.tsx
Test: tests/unit/ui/compressionHub-active-selector.test.tsx
Step 1: Read the file first. Note: it uses literal English strings (no useTranslations), useState for settings/engines/combo, a saveSettings() PUT to /api/settings/compression, a MODES array + a mode <select>, a Token Saver master <Toggle>, and a moveStep() reorder. The component fetches /api/settings/compression, /api/compression/engines, /api/context/combos/default on mount.
Step 2: Write the failing component test at tests/unit/ui/compressionHub-active-selector.test.tsx (mirror tests/unit/ui/compressionPanel.test.tsx's createRoot+act harness). Stub fetch: /api/settings/compression → { enabled:true, defaultMode:"off", activeComboId:null }; /api/compression/engines → { engines: [] }; /api/context/combos → { combos: [{ id:"c1", name:"RTK only", pipeline:[{engine:"rtk"}] }] }. Assert:
1. A <select data-testid="active-profile-select"> renders with options "Default (from panel)" and "RTK only".
2. Changing it to c1 issues a PUT /api/settings/compression whose body has activeComboId === "c1".
3. The preview (data-testid="active-profile-preview") shows the combo's engines when a combo is active.
4. There is NO mode <select> for Off/Lite/Standard and NO "Token Saver" master toggle (query by their old text/testids → absent).
Step 3: Run → FAIL (npx vitest run tests/unit/ui/compressionHub-active-selector.test.tsx).
Step 4: Implement in CompressionHub.tsx:
- Remove the Token Saver master <Toggle> + its label/explainer, the MODES mode <select> + its handler, and moveStep + the reorder buttons. Keep the component's data load + error handling.
- Add activeComboId to the settings state/type; fetch the named combos list (/api/context/combos) on mount into a combos state.
- Add the active-profile <select data-testid="active-profile-select"> with a "Default (from panel)" option (value "" → activeComboId: null) and one option per named combo (value=c.id, label c.name). On change: setSettings(s => ({...s, activeComboId})) + PUT /api/settings/compression { activeComboId }.
- Add the read-only preview <div data-testid="active-profile-preview">: if activeComboId matches a combo, render its pipeline engines joined by " → "; else render the Default — import deriveDefaultPlan (relative path ../../../../../../open-sse/services/compression/deriveDefaultPlan.ts, the Phase-1 panel pattern — the bare @omniroute/... alias does NOT resolve under vitest) and engineCatalog if needed; compute deriveDefaultPlan(engines, enabled) from the fetched settings/engines and show the order, OR (simpler, no engines map on the Hub settings type) show the text "Default — see the panel for the derived pipeline." Choose the simplest correct option that the test asserts.
- Match the file's existing literal-English style + primitives.
Step 5: Run → PASS + npm run typecheck:core + npm run lint.
Step 6: Commit

git add "src/app/(dashboard)/dashboard/context/combos/CompressionHub.tsx" tests/unit/ui/compressionHub-active-selector.test.tsx
git commit -m "feat(dashboard): active-profile selector in CompressionHub; remove master toggle/mode/reorder"

Task 4: UI — NamedCombosManager: remove "Set as Default", add "● Active" badge

Files:

Modify: src/app/(dashboard)/dashboard/context/combos/CompressionCombosPageClient.tsx
Test: tests/unit/ui/namedCombos-active-badge.test.tsx
Step 1: Read the file first. Note: literal English; setDefault(id) PUTs /api/context/combos/{id} { isDefault: true }; the combo cards (combos.map) show a combo.isDefault "Default" badge and, when !combo.isDefault, a "Set as Default" button + a Delete button.
Step 2: Write the failing component test at tests/unit/ui/namedCombos-active-badge.test.tsx. Stub: /api/context/combos → two combos c1/c2; /api/combos → []; /api/compression/language-packs → []; /api/settings/compression → { activeComboId: "c2" }. Assert:
1. No "Set as Default" button is present anywhere.
2. The card for c2 shows an "● Active" badge (query data-testid="active-badge-c2"); the card for c1 does NOT.
Step 3: Run → FAIL (npx vitest run tests/unit/ui/namedCombos-active-badge.test.tsx).
Step 4: Implement in CompressionCombosPageClient.tsx:
- Remove the setDefault function and the "Set as Default" <button> from the card render.
- Fetch activeComboId on mount (GET /api/settings/compression → data.activeComboId) into an activeComboId state.
- In the card render, replace the combo.isDefault "Default" badge with: combo.id === activeComboId && <span data-testid={\active-badge-${combo.id}`}>● Active. (Keep the isDefault` field in the type; just stop surfacing it.)
- Keep create/edit/delete/pipeline-editor/language-packs/output-mode/assignments untouched.
Step 5: Run → PASS + npm run typecheck:core + npm run lint.
Step 6: Commit

git add "src/app/(dashboard)/dashboard/context/combos/CompressionCombosPageClient.tsx" tests/unit/ui/namedCombos-active-badge.test.tsx
git commit -m "feat(dashboard): NamedCombosManager active badge; remove Set-as-Default (active selector replaces it)"

Task 5: Full validation + no-regression + file-size

Files:

Modify (if needed): config/quality/file-size-baseline.json (rebaseline any grown frozen file with a justification key)
Test: reuse existing suites.
Step 1: Run the FULL gates:
- npm run typecheck:core (clean)
- npm run lint (0 errors)
- npm run check:cycles (no cycles — the new combos threading must not create a strategySelector → src/lib/db cycle; it must NOT — chatCore does the DB load, not strategySelector)
- node --import tsx/esm --test tests/unit/compression/*.test.ts (green, incl. the Phase-1 strategySelector/derive/resolve tests UNCHANGED — confirm no regression from the combos param defaults)
- npm run test:vitest (blocking; green)
- npx vitest run tests/unit/ui/compressionHub-active-selector.test.tsx tests/unit/ui/namedCombos-active-badge.test.tsx (green)
- the api + db compression tests (tests/unit/api/compression/*.test.ts, the migration/round-trip test)
Step 2: If check:file-size flags CompressionHub.tsx/CompressionCombosPageClient.tsx/strategySelector.ts/chatCore.ts, update config/quality/file-size-baseline.json (value + a _rebaseline_2026_06_21_phase2_active_selector justification key, same pattern as Phase 1).
Step 3: Commit

git add -A
git commit -m "chore(compression): Phase 2 full validation + file-size rebaseline"

Self-review notes (done while writing)

Spec coverage: active-combo resolution in resolveBasePlan (T1), combos threading (T1), chatCore load + legacy-block guard (T2), active-profile selector + Hub cleanup (T3), Set-as-Default removal + active badge (T4), is_default-untouched assertion (T2), tests + file-size (T5). ✓
Type consistency: NamedCombos = Record<string, CompressionPipelineStep[]> used in T1's signatures + T2's chatCore load + activeComboResolves. DerivedPlan.stackedPipeline accepts CompressionPipelineStep[] (structural superset). ✓
No placeholders: concrete code/tests; UI removals point at exact elements (the executing subagent reads the file). T3 step 4 offers the simplest preview option and tells the executor to pick what the test asserts — make the test assert the combo-engine text and the "Default" fallback text so the choice is fixed at execution.

📌 RESUMO — o que ESTE plano (Fase 2) entrega

Resolução do perfil ativo no resolveBasePlan (precedência routing-override > ativo > auto-trigger > Default derivado), independente de enginesExplicit, com combos threaded por selectCompressionPlan/Strategy.
chatCore carrega combos nomeados (listCompressionCombos) e os passa ao resolver; o bloco legado de default-combo é guardado por !activeComboResolves (não sombreia o perfil ativo).
CompressionHub ganha o seletor de perfil ativo + preview e perde master-toggle/mode-selector/reorder (duplicados/derivados).
NamedCombosManager perde "Set as Default" e ganha o badge "● Ativo".
Zero API/DB nova; is_default/legado intocados; validação completa + rebaseline file-size.

⏳ PENDÊNCIAS — depois desta fase

Fase 3 — header x-omniroute-compression (resolver já header-aware; falta parsing+wiring, espelhando x-omniroute-no-memory #4290).
Deferidos da Fase 1: B-OBSERVABILITY, packs caveman de/fr/ja, bump js-tiktoken.
Decisão operacional: ligar o SLM (tier ultra) em produção.

Uh oh!

2026 06 21 Compression Phase2 Named Profiles Plan

Compression Phase 2 — Named Profiles + Active Selector Implementation Plan

File Structure

Task 1: Dispatch — resolve the active combo + thread combos

Task 2: chatCore — load named combos + guard the legacy block

Task 3: UI — active-profile selector in CompressionHub (remove duplicates)

Task 4: UI — NamedCombosManager: remove "Set as Default", add "● Active" badge

Task 5: Full validation + no-regression + file-size

Self-review notes (done while writing)

📌 RESUMO — o que ESTE plano (Fase 2) entrega

⏳ PENDÊNCIAS — depois desta fase

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Task 1: Dispatch — resolve the active combo + thread `combos`