v2

release: Memi 2.7.4 fail-closed fitness routing (#105)

* test: define fail-closed route fitness contract

* feat: add fail-closed route fitness evidence v2

* docs: record route fitness implementation

* research: freeze V15 2.7.3 confirmatory protocol

* fix: separate candidate runtime from admission harness

* docs: record admission harness correction

* research: disclose V15 admission harness deviation

* research: record failed SwiftUI pair without imputation

* research: disclose stalled V15 provider attempt

* fix: resume incomplete prospective pairs safely

* docs: record prospective resume correction

* feat: add v15 confirmatory analysis pipeline

* research: seal V15 evidence ledgers

* fix: align v15 analysis with exclusion and receipt hashing rules

* research: validate blinded grading panel

* test: define sealed V15 route import contract

* ci: test supported platforms and Node versions

* docs: add V15 confirmatory audit paper

* feat: import manifest-sealed V15 fitness routes

* docs: record V15 import and platform gate

* docs: add 2.7.3 channel provenance audit

* test: define V15 analysis artifact contract

* feat: generate V15 statistical report artifacts

* test: add V15 fitness-policy artifact reproducer

* fix: add V15 fitness-policy artifact builder

* test: define blinded grader bundle contract

* feat: build fail-closed blinded grader bundle

* docs: refresh 2.7.3 live channel audit

* test: define recovery probe and task class contracts

* test: define sealed fitness evidence boundary

* research: record controlled website before-after audit

* fix: add prospective fitness recovery probes

* fix: require phone-width grader evidence

* fix: seal skill fitness empirical evidence

* test: seal fitness command fixtures

* test: bind fitness event execution mode

* fix: bind fitness execution provenance

* docs: record fail-closed recovery hardening

* refactor: scope fitness evidence containment

* docs: record fitness containment cleanup

* test: define atomic fitness append lock

* test: cover deterministic V15 artifact execution

* test: require LF-only generated V15 tables

* research: execute V15 confirmatory analysis

* fix: serialize skill fitness appends

* refactor: isolate fitness file locking

* docs: record atomic fitness append hardening

* test: cover V15 chronology edge cases

* test: define blinded defect and repeat traceability

* fix: align V15 defects and sensitivity labels

* fix: extend V15 fitness chronology coverage

* test: define deterministic V15 report package contract

* test: define 2.7.4 candidate release surfaces

* chore: prepare Memi 2.7.4 candidate

* chore: sync 2.7.4 candidate artifacts

* test: prevent fitness backtest look-ahead

* test: define V15 chronological fitness backtest

* fix: timestamp complete fitness pairs

* docs: record pair-complete fitness chronology

* feat: build deterministic V15 report package

* test: require 2.7.4 changelog commit provenance

* feat: execute V15 chronological fitness backtest

* fix: preserve 2.7.4 changelog provenance

* test: define immutable package documentation boundary

* research: index V15 fitness backtest artifacts

* fix: keep candidate state out of npm docs

* docs: record immutable package documentation boundary

* test: harden V15 fitness replay evidence

* docs: compact V15 report float layout

* fix: harden V15 fitness evidence replay

* docs: reconcile 2.7.4 audit provenance

* test: pin and bound V15 fitness execution

* fix: make V15 notebook execution portable

* fix: pin and cap V15 fitness execution

* test: close residual V15 execution bounds

* fix: bound V15 JSON and process cleanup

* docs: finalize 2.7.4 audit candidate

* test: reproduce shallow clean-install ancestry failure

* test: reproduce Windows path containment failures

* test: reproduce Windows tools RPC endpoint failure

* ci: prepare full clean-install matrix

* fix: make path containment portable on Windows

* fix: use named pipes for Windows tools RPC

* docs: record Windows tools RPC portability

* test: reproduce Windows tsx shim execution failure

* fix: launch execute-code portably on Windows

* fix: make Windows test contracts portable

* docs: record Windows portability hardening

* docs: record Windows execute-code portability

* test: reproduce residual Windows path failures

* fix: harden residual Windows path contracts

* docs: record residual Windows path hardening

* test: reproduce final Windows subprocess failures

* test: block symlink escapes and provenance overclaim

* fix: launch Windows CLI shims portably

* fix: reject symlink escapes and clarify local provenance

* docs: record symlink containment hardening

* docs: finalize cross-platform candidate audit

* docs: finalize V15 audit PDF artifact

* docs: rebind backtest provenance to final candidate

* docs: finalize confirmatory audit pdf

* research: rebind backtest to final candidate

* test: make shadcn spec path assertion portable

* test: preserve prior public release provenance

* fix: retain prior release record in candidate projection

* chore: sync preserved public release provenance

* test: label candidate changelog truthfully

* fix: distinguish candidate changelog status

* test: reproduce Studio shutdown evidence race

* fix: gate candidate changelog status consistently

* test: authenticate retained release records

* fix: authenticate retained release record bytes

* fix: drain Studio runtime work before cleanup

* docs: record final candidate repairs

* test: bind candidate to prior release record

* docs: complete candidate provenance chronology

* research: replay final candidate fitness chronology

* docs: record final fitness replay provenance

* test: run Codex fixture through Node portably

* docs: record final Windows fixture repair

* fix: close Windows archive and Studio handles

* docs: record Windows handle cleanup