diff --git a/Taskfile.yml b/Taskfile.yml
index fbca41b..fe5c7f5 100644
--- a/Taskfile.yml
+++ b/Taskfile.yml
@@ -1,37 +1,79 @@
 version: '3'
 
 tasks:
-  generate:
-    desc: Run templ generate
-    cmds: [templ generate]
-  build:
-    desc: Build the binary
-    deps: [generate]
-    cmds: [go build -o bin/hostexecutor ./cmd/hostexecutor]
-  run:
-    deps: [build]
-    cmds: [./bin/hostexecutor]
-  test:
-    desc: Run all tests
-    deps: [generate]
-    cmds: [go test ./... -race]
-  lint:
-    cmds: [golangci-lint run ./...]
+
+  # ── Quality gate ──────────────────────────────────────────────────────────
+
   check:
-    desc: Lint, vet, and test (used by CI)
-    deps: [generate]
+    desc: "Full quality gate: lint + vet + test (run before every commit)"
     cmds:
-      - golangci-lint run ./...
-      - go vet ./...
-      - go test ./... -race -count=1
+      - golangci-lint run ./src/...
+      - go vet ./src/...
+      - go test ./src/... -race -count=1
+      - cd model && python -m pytest tests/ -q
+
+  test:
+    desc: Run Go tests only
+    cmds: [go test ./src/... -race]
+
+  lint:
+    desc: Lint Go code
+    cmds: [golangci-lint run ./src/...]
+
+  # ── Data ─────────────────────────────────────────────────────────────────
+
+  data:fetch:
+    desc: "Download G10 tick data from DUKASCopy (2003–2022)"
+    cmds: [go run ./src/cmd/fetch --config data/config.yaml]
+
+  data:process:
+    desc: "Resample ticks → hourly OHLCV + features (log-return, rolling HV)"
+    cmds: [go run ./src/cmd/process --input data/raw --output data/processed]
+
+  data:validate:
+    desc: "Validate processed data: gap detection, outlier report, regime coverage"
+    cmds: [go run ./src/cmd/validate --input data/processed]
+
+  # ── Experiment ───────────────────────────────────────────────────────────
+
+  experiment:run:
+    desc: "Run an experiment from a spec file. Usage: task experiment:run -- --spec specs/phase-0-ssl-feasibility.md"
+    cmds: [go run ./src/cmd/experiment {{.CLI_ARGS}}]
+
+  experiment:list:
+    desc: List all recorded experiment runs
+    cmds: [ls -lt experiments/ | head -20]
+
+  # ── Evaluation ───────────────────────────────────────────────────────────
+
+  eval:silhouette:
+    desc: "Compute silhouette score on embedding output. Usage: task eval:silhouette -- --run experiments/RUNID"
+    cmds: [go run ./src/cmd/eval silhouette {{.CLI_ARGS}}]
+
+  eval:probe:
+    desc: "Run linear probe on frozen embeddings vs. realised-vol decile"
+    cmds: [go run ./src/cmd/eval probe {{.CLI_ARGS}}]
+
+  eval:collapse:
+    desc: "Check collapse diagnostic: PC1 correlation with rolling HV"
+    cmds: [go run ./src/cmd/eval collapse {{.CLI_ARGS}}]
+
+  # ── Model (Python) ───────────────────────────────────────────────────────
+
+  model:train:
+    desc: "Train TS-JEPA model. Usage: task model:train -- --config model/configs/phase0.yaml"
+    dir: model
+    cmds: [python train.py {{.CLI_ARGS}}]
+
+  model:setup:
+    desc: "Create Python venv and install model dependencies (uv)"
+    dir: model
+    cmds:
+      - uv venv .venv
+      - uv pip install -r requirements.txt
+
+  # ── Context ──────────────────────────────────────────────────────────────
 
   context:sync:
-    desc: Regenerate all harness-specific context files
-    cmds:
-      - bash scripts/context-sync.sh
-  context:sync:claude:
-    cmds: [bash scripts/context-sync.sh claude]
-  context:sync:agents:
-    cmds: [bash scripts/context-sync.sh agents]
-  context:sync:cursor:
-    cmds: [bash scripts/context-sync.sh cursor]
+    desc: "Regenerate CLAUDE.md and AGENTS.md from .context/PROJECT.md"
+    cmds: [bash scripts/context-sync.sh]