Relay: coordination as a Raft group, and joined computers can lead

.gitignore

@@ -2,7 +2,9 @@ bin/
 # The furrow the build fetches, and the copy it stages for go:embed. Both are
 # six megabytes of somebody else's release; internal/furrowbin/pin.json is the
 # committed, auditable half and these are rebuilt from it by `make furrow`.
-third_party/
+third_party/*
+!third_party/raft/
+!third_party/raft-patch/
 internal/furrowbin/cache/furrow-*.gz
 .obs/
 *.log
@@ -51,3 +53,6 @@ relay/hosted/.wrangler/
 
 # Native Windows test executables are local acceptance artifacts.
 .wintest/
+
+# The hosted reactor is generated from the shared, pinned Go core.
+/relay/hosted/src/raft/core.wasm

PERF.md

@@ -83,6 +83,18 @@ migration flag skips that check. `BenchmarkOpenSettledSessions` measures the
 whole public open/close operation. `TestSettledStoreTerminalStartup` separates
 fixture construction from the first interactive frame of the running terminal.
 
+Native peer acknowledgements reuse the validated routing view only for the same
+store and durably applied index. Every applied change, including revocation,
+invalidates that view. `TestR11R27UnchangedPeerAcknowledgementWork` exercises the
+real transport and caps an unchanged acknowledgement at 1,000 allocations with
+no application append; the measured cost fell from 3,273 allocations to 192.
+
+An authenticated native directory read with already durable ingress time uses a
+fresh quorum view and the normal state evaluator before omitting an identical
+append. New time and changed records still commit before inspection.
+`TestR4R26R27ReadCommitsOnlyChangedTime` counts applied entries for unchanged,
+advanced and repeated time, and requires invalid original authority to fail.
+
 ## What the gates check
 
 `make test-quick` checks compilation, vet, formatting, packed manuals, change
@@ -108,3 +120,10 @@ artifact. The reference target is darwin/amd64 with its own pinned artifact stag
 other platforms can have different absolute sizes. Reduce unnecessary code, data
 or dependencies first. A justified cap adjustment belongs in the same change as
 the feature and its measurements; keep `SIZE-BUDGET` explicit and reviewable.
+
+Every build links the Raft coordination core: the modified Raft copy, protobuf,
+the signed state machine and its SQLite snapshot host. The relay and devices
+always coordinate through it, so no build leaves it out. On linux/amd64 it adds
+3,379,200 bytes to the stripped binary (75,755,785 to 79,134,985 on the same dev
+base), and the cap moves by the same amount, from 75,811,848 to 79,191,048, so
+the 56,063 bytes of headroom the base had are kept.

SIZE-BUDGET

@@ -1 +1 @@
-75811848
+79191048

THIRD-PARTY-NOTICES.md

@@ -2873,6 +2873,220 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
 ```
 
+## go.etcd.io/raft/v3
+
+- Version: v3.7.0
+- Licence: Apache-2.0
+
+The Apache-2.0 Raft source is a modified copy in `third_party/raft`: codeaf injects per-node election randomness for deterministic replay. The pinned upstream version, patch and licence are retained there.
+
+### LICENSE
+
+```text
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
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+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
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+      direction or management of such entity, whether by contract or
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+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
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+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
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+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
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+      Work and such Derivative Works in Source or Object form.
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+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
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+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
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+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
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+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
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+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+```
+
 ## go.yaml.in/yaml/v4
 
 - Version: v4.0.0-rc.2
@@ -3436,6 +3650,70 @@ rights granted to you under this License for this implementation of Go
 shall terminate as of the date such litigation is filed.
 ```
 
+## google.golang.org/protobuf
+
+- Version: v1.36.11
+- Licence: BSD-3-Clause with the Go PATENTS grant
+
+### LICENSE
+
+```text
+Copyright (c) 2018 The Go Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+```
+
+### PATENTS
+
+```text
+Additional IP Rights Grant (Patents)
+
+"This implementation" means the copyrightable works distributed by
+Google as part of the Go project.
+
+Google hereby grants to You a perpetual, worldwide, non-exclusive,
+no-charge, royalty-free, irrevocable (except as stated in this section)
+patent license to make, have made, use, offer to sell, sell, import,
+transfer and otherwise run, modify and propagate the contents of this
+implementation of Go, where such license applies only to those patent
+claims, both currently owned or controlled by Google and acquired in
+the future, licensable by Google that are necessarily infringed by this
+implementation of Go.  This grant does not include claims that would be
+infringed only as a consequence of further modification of this
+implementation.  If you or your agent or exclusive licensee institute or
+order or agree to the institution of patent litigation against any
+entity (including a cross-claim or counterclaim in a lawsuit) alleging
+that this implementation of Go or any code incorporated within this
+implementation of Go constitutes direct or contributory patent
+infringement, or inducement of patent infringement, then any patent
+rights granted to you under this License for this implementation of Go
+shall terminate as of the date such litigation is filed.
+```
+
 ## gopkg.in/yaml.v3
 
 - Version: v3.0.1

cmd/codeaf-notices/notices.go

@@ -68,10 +68,15 @@ func collectComponents(root string, environment []string) ([]component, error) {
 		if err != nil {
 			return nil, fmt.Errorf("read licences for %s: %w", module.Path, err)
 		}
+		description := ""
+		if module.Path == "go.etcd.io/raft/v3" {
+			description = "The Apache-2.0 Raft source is a modified copy in `third_party/raft`: codeaf injects per-node election randomness for deterministic replay. The pinned upstream version, patch and licence are retained there."
+		}
 		components = append(components, component{
-			Identifier: module.Path,
-			Version:    module.Version,
-			Licences:   licences,
+			Description: description,
+			Identifier:  module.Path,
+			Version:     module.Version,
+			Licences:    licences,
 		})
 	}
 
@@ -123,7 +128,7 @@ func collectComponents(root string, environment []string) ([]component, error) {
 
 func listCompiledModules(root string, environment []string) ([]moduleVersion, error) {
 	const format = `{{if and (not .Standard) .Module}}{{if not .Module.Main}}{{.Module.Path}} {{.Module.Version}}{{end}}{{end}}`
-	out, err := runGo(root, environment, "list", "-deps", "-f", format, "./cmd/codeaf")
+	out, err := runGo(root, environment, "list", "-p=1", "-deps", "-f", format, "./cmd/codeaf")
 	if err != nil {
 		return nil, fmt.Errorf("list modules compiled into cmd/codeaf: %w", err)
 	}