diff --git a/crates/aura-cli/tests/cli_run.rs b/crates/aura-cli/tests/cli_run.rs
index 034fa02..cc4aaee 100644
--- a/crates/aura-cli/tests/cli_run.rs
+++ b/crates/aura-cli/tests/cli_run.rs
@@ -2992,8 +2992,11 @@ fn walkforward_dissolved_refuses_a_multi_value_stop() {
 
 /// #215: --select plateau is no longer refused on the dissolved path — it now
 /// threads through to the wf stage exactly like the built-in synthetic path.
-/// Gated on the shared GER40 archive; skips cleanly on a data refusal (exit 1),
-/// same tolerance as the sibling stop-knob-defaulting test.
+/// The property is flag acceptance, not window semantics, so the window is
+/// bounded (~135 days, one IS(90d)+OOS(30d) roll) rather than streaming the
+/// full multi-year archive. Gated on the shared GER40 archive; skips cleanly
+/// on a data refusal (exit 1), same tolerance as the sibling
+/// stop-knob-defaulting test.
 #[test]
 fn walkforward_dissolved_accepts_select_plateau() {
     let (cwd, _g) = fresh_project();
@@ -3004,6 +3007,7 @@ fn walkforward_dissolved_accepts_select_plateau() {
             "--axis", "sma_signal.fast.length=3", "--axis", "sma_signal.slow.length=12",
             "--stop-length", "14", "--stop-k", "2.0",
             "--select", "plateau:worst",
+            "--from", "1735689600000", "--to", "1747353600000",
         ])
         .current_dir(cwd)
         .output()
@@ -3090,8 +3094,10 @@ fn walkforward_real_e2e_pins_the_exact_current_plateau_grade() {
 /// explicit still succeeds, proving the defaulting is per-flag, not
 /// all-or-nothing (the sibling
 /// `walkforward_stopless_defaults_the_regime_byte_identically_to_explicit_3_2`
-/// pins the both-omitted case). Gated on the shared GER40 archive; skips
-/// cleanly on a data refusal.
+/// pins the both-omitted case). The property is per-flag defaulting, not
+/// window semantics, so the window is bounded (~135 days) rather than
+/// streaming the full multi-year archive. Gated on the shared GER40 archive;
+/// skips cleanly on a data refusal.
 #[test]
 fn walkforward_dissolved_defaults_a_single_omitted_knob() {
     let (cwd, _g) = fresh_project();
@@ -3101,6 +3107,7 @@ fn walkforward_dissolved_defaults_a_single_omitted_knob() {
             "walkforward", &fixture, "--real", "GER40",
             "--axis", "sma_signal.fast.length=3", "--axis", "sma_signal.slow.length=12",
             "--stop-length", "3",
+            "--from", "1735689600000", "--to", "1747353600000",
         ])
         .current_dir(cwd)
         .output()
@@ -5268,11 +5275,12 @@ fn mc_dissolves_through_the_campaign_path() {
 /// to completion by fitting the injected walk-forward roller down to the campaign
 /// window, instead of refusing late at the executor with "walk_forward windows do not
 /// fit the campaign window" (exit 1, no remedy reachable from the mc surface). The
-/// short window is DERIVED from the live archive — probe GER40's full span via a
-/// no-window single-cell sweep, then take the last ~30 days — the same live-archive
-/// derivation `generalize_without_explicit_window_resolves_the_intersection_of_all_symbols`
-/// uses, so the window stays short as the archive grows and always holds recent bars.
-/// The leading sweep stage runs first over the short window; the refusal today fires at
+/// short window is a FIXED ~30 days (2025-04-16..2025-05-16, the tail of the
+/// ~135-day span the walkforward e2e tests use): what the property needs is "a
+/// data-carrying window far shorter than the roller", which a fixed recent window
+/// satisfies without the full-archive probe sweep a live-span derivation costs —
+/// the archive only grows forward, so the window never falls off its end. The
+/// leading sweep stage runs first over the short window; the refusal today fires at
 /// stage 1 (the walk_forward roller), so this bites only when the window genuinely has
 /// data. Gated on the GER40 archive; skips cleanly on a data-less host.
 #[test]
@@ -5284,56 +5292,10 @@ fn mc_real_fits_the_injected_roller_to_a_short_window() {
     let (cwd, _g) = fresh_project();
     let fixture = format!("{}/examples/r_sma.json", env!("CARGO_MANIFEST_DIR"));
 
-    // Probe GER40's full archive window: a single-cell, no-window sweep records
-    // `campaign_window_ms(full_window)` into its generated campaign document, in the
-    // same Unix-ms currency `--from`/`--to` speak (the generalize no-window test's
-    // derivation).
-    let full_window = {
-        let name = "probe-ger40-span";
-        let out = std::process::Command::new(env!("CARGO_BIN_EXE_aura"))
-            .args([
-                "sweep", &fixture, "--real", "GER40",
-                "--axis", "sma_signal.fast.length=3", "--axis", "sma_signal.slow.length=12",
-                "--name", name,
-            ])
-            .current_dir(cwd)
-            .output()
-            .expect("spawn aura sweep probe");
-        assert_eq!(
-            out.status.code(), Some(0),
-            "the full-archive window-probe sweep must run to exit 0: {}",
-            String::from_utf8_lossy(&out.stderr)
-        );
-        let dir = cwd.join("runs").join("campaigns");
-        let mut resolved = None;
-        for entry in std::fs::read_dir(&dir).expect("campaigns dir exists after a run") {
-            let path = entry.expect("readable dir entry").path();
-            let doc: serde_json::Value =
-                serde_json::from_str(&std::fs::read_to_string(&path).expect("read campaign doc"))
-                    .expect("campaign doc parses as JSON");
-            if doc["name"].as_str() == Some(name) {
-                let w = &doc["data"]["windows"][0];
-                resolved = Some((
-                    w["from_ms"].as_i64().expect("from_ms is an integer"),
-                    w["to_ms"].as_i64().expect("to_ms is an integer"),
-                ));
-                break;
-            }
-        }
-        resolved.expect("the probe campaign document records GER40's full window")
-    };
-
-    // The last ~30 days of the archive: far shorter than the fixed 90+30-day roller,
-    // so the injected walk_forward cannot fit unless it scales down to the window.
-    const THIRTY_DAYS_MS: i64 = 30 * 86_400_000;
-    let sub_from = full_window.1 - THIRTY_DAYS_MS;
-    let sub_to = full_window.1;
-    assert!(
-        sub_from > full_window.0,
-        "the derived ~30-day sub-window must sit inside the archive span {full_window:?}"
-    );
-    let sub_from_s = sub_from.to_string();
-    let sub_to_s = sub_to.to_string();
+    // ~30 days, far shorter than the fixed 90+30-day roller, so the injected
+    // walk_forward cannot fit unless it scales down to the window.
+    const SUB_FROM_MS: &str = "1744761600000";
+    const SUB_TO_MS: &str = "1747353600000";
 
     let out = std::process::Command::new(env!("CARGO_BIN_EXE_aura"))
         .args([
@@ -5341,7 +5303,7 @@ fn mc_real_fits_the_injected_roller_to_a_short_window() {
             "--axis", "sma_signal.fast.length=3,5", "--axis", "sma_signal.slow.length=12,20",
             "--stop-length", "14", "--stop-k", "2.0",
             "--block-len", "5", "--resamples", "100", "--seed", "42",
-            "--from", &sub_from_s, "--to", &sub_to_s,
+            "--from", SUB_FROM_MS, "--to", SUB_TO_MS,
         ])
         .current_dir(cwd)
         .output()