[Fix] (Metrics, DirectGLES, DirectVulkan): stop the summary line printing window totals under a per-frame label, and wire the six staging paths the site inventory claimed were covered or absent

- A window with no Present divided by a faked 1 and printed the window TOTALS under
  "bytes/f[...]": the *MultiDraw* slice (47 draws, no present) reported 1,404,550 bytes as a
  PER-FRAME figure, a 47x overstatement of exactly the SEG_STAGE sizing input plan B section
  8.2 / section 11 P0 asks this package to produce. FormatWindowLine now relabels the bracket
  to "bytes[...]" and prints draws/f=n/a when the window holds no frame; acc/draw=n/a follows
  the same rule, because "0.00" beside a non-zero acc= is the same lie. Pinned by
  PipeStatsTest.SummaryLineSurvivesZeroFrames and the reworked SummaryLineSurvivesZeroDraws.
- Every per-frame and per-draw field now goes through one FormatFixed2 helper. draws/f read 1
  for 26 draws over 14 frames (1.86) and buf read 97 for 1360 bytes (97.14): a systematic
  downward truncation of up to a whole unit on the figures the package exists to produce.
  Pinned by PipeStatsTest.PerFrameFieldsKeepTwoDecimals.
- FormatSummaryLine rewrote the window bases as a side effect of formatting, so any second
  reader silently zeroed the next window. Split into a pure FormatWindowLine() and an explicit
  AdvanceSummaryWindow(); EmitSummaryLine calls both. Pinned by
  PipeStatsTest.FormattingTwiceDoesNotConsumeTheWindow.
- Init() called ResetForTesting(), against the header's own "not used by any shipping path".
  Both now forward to an internal ResetCounters().
- TracyPlot published only the MISS half of each gate under the gate's unqualified name, so
  the headline output channel of section 11 P0 carried no denominator. Two series per gate now
  ("...-hit" / "...-miss") from static literal arrays. The payload histogram stays unplotted
  and says why: it is a run-total distribution over draws (section 4.5.7), not a per-frame
  scalar, and it reaches the operator through the JSON dump.
- GetOrCreatePipeline's 15-call tally sat ABOVE the list-topology primitive-restart refusal,
  so a declined draw added ten reads it never made - an OVER-count, which breaks the lower
  bound contract every other tally keeps. Moved to immediately before the payload build, and
  the enumeration reconciled with the constant: the excluded read is the sample-shading
  capability, short-circuited by m_sampleRateShadingFeatureEnabled.
- Six real staging paths were uncounted while the inventory claimed coverage. The inventory
  claim "DirectVulkan's own buffer staging ... has no second copy to count" was simply false.
  Now wired: MultiDraw.cpp's UploadScratch/UploadScratchRing (indirect commands, the compute
  tier's draw-info array, the rebased index stream - the class is passed in, so a new tier
  cannot forget it); Managers.cpp's pool-recycle reseed and the VBO-backed Float64 narrowing;
  VkBufferManager's eight host->device copies of buffer contents plus UploadTransient, the
  single chokepoint for Magma's per-draw vertex/index/indirect staging; VkTextureManager's
  packed staging slice, with the same box/rect SHAPE split Espryt already reported.
- New byte class stage-indirect-cmd, for draw PARAMETER bytes a backend synthesises and
  stages. Kept out of stage-index-client because these are the population that becomes MGPipe
  command-record payload (section 4.5.7), not resource bytes. A name addition, not a rename:
  no recorded baseline is invalidated.
- stage-ubo-named moved past the zero-copy direct-bind decision in ResolveUniformBufferPayload
  (a direct bind repacks nothing, so counting it there reported a copy that never happened),
  and Magma's default-uniform-block image now feeds stage-ubo-global the way Espryt's does,
  counted after the per-frame slice memo.
- The site inventory in PipeStats.cpp is rewritten to name every unwired path by file and
  function. An inventory that overstates coverage is worse than a missing counter, because
  the zero is then read as an answer.
- Evidence, lavapipe/llvmpipe, MOBILEGL_PIPE_STATS=1: the MultiDraw slice now prints
  "window=0 draws/f=n/a bytes[buf=1404550 ...]"; the indirect tiers
  (MOBILEGL_ESPRYT_MULTIDRAW_MODE=indirect|multiindirect) move icmd 0 -> 660; Magma's GuiBatch
  line moves from buf=0 tex=0 ubog=0 to buf=685.71 tex=41.14 ubog=157.71 with tex[emit=9
  box=9 rect=0 jobs=9]. Off-path A/B against the base tree with the env unset, 9 runs each of
  a 40-scenario draw slice, sorted totals in ms: Espryt base 389..794 (median 399) vs branch
  384..403 (median 394); Magma base 406..472 (median 410) vs branch 408..761 (median 414) -
  the always-compiled guard is below this harness's noise on both backends.
- 1410 unit tests green (15 PipeStatsTest). integration-gpu 860/860, 860/860, 859/860; the one
  failure is DirectVulkan.PointSizeDemotion...TheDemotionIsActuallyArmedWhenTheEnvironmentPins-
  ItOn, a member of the load-dependent *IsActuallyArmed* flake family already present in the
  untouched base tree, and it passes 8/8 standalone here. stdio gate and gen_pipe check green.

MobileGL/MG_Backend/DirectGLES/Managers.cpp

@@ -1538,6 +1538,13 @@ namespace MobileGL::MG_Backend::DirectGLES {
                     BindBufferId(TempBufferTarget, reused);
                     g_GLESFuncs.glBufferSubData(TempBufferTarget, 0, (GLsizeiptr)poolSize,
                                                 bufferObject->MappedData());
+                    if (MG_Util::PipeStats::Enabled()) {
+                        // The pool-recycle reseed is a whole-buffer upload on the hot path,
+                        // not a bookkeeping detail: it moves the same bytes a fresh
+                        // glBufferData would.
+                        MG_Util::PipeStats::AddBytes(MG_Util::PipeStats::ByteClass::StageBuffer,
+                                                     static_cast<Uint64>(poolSize));
+                    }
                     {
                         const std::lock_guard<std::mutex> lock(resource->pendingMutex);
                         resource->pendingRanges.clear();
@@ -2695,6 +2702,12 @@ namespace MobileGL::MG_Backend::DirectGLES {
                 g_GLESFuncs.glBufferData(GL_ARRAY_BUFFER,
                                          static_cast<GLsizeiptr>(converted.size() * sizeof(Float)),
                                          converted.data(), GL_STREAM_DRAW);
+                if (MG_Util::PipeStats::Enabled()) {
+                    // The VBO-backed half of the 64-bit narrowing. Same population as the
+                    // client-array half above: a stream the backend synthesises per draw.
+                    MG_Util::PipeStats::AddBytes(MG_Util::PipeStats::ByteClass::StageVertexClient,
+                                                 static_cast<Uint64>(converted.size() * sizeof(Float)));
+                }
                 stream.valid = true;
                 stream.sourceLifetimeId = sourceLifetimeId;
                 stream.sourceChangeSerial = sourceChangeSerial;