Product journeys and behavioral model

This document provides the product/program structure that connects people and goals to the authoritative behavior defined in product-contract.md.

It does not redefine product behavior. docs/product/product-contract.md remains authoritative for supported scope, invariants, exclusions, safety semantics, verification, and recovery. Command syntax remains authoritative in docs/reference/commands/ and native PowerShell help.

The traceability model is:

Persona -> Journey -> Capability -> Use Case -> Product Requirement -> Acceptance Criteria -> Behavioral Scenario -> Automated Test -> Live Validation -> Release Evidence

Later quality and release work can attach test and release evidence to the stable IDs defined here without duplicating the product contract.

Product intent

Problem

A repository owner may need to publish a developed GitHub repository as a clean repository whose visible Git history begins with approved repository states, or make a history-preserving copy, without manually reconstructing repository content, selected GitHub Releases, settings, safety checks, and verification steps.

Intended outcome

The operator can deliberately choose clean Snapshot publication or FullHistory copy, optionally preserve an approved subset of GitHub Releases using mode-appropriate semantics, review the exact planned source state before mutation, preserve an existing repository when replacement is required, verify the resulting content/configuration, and retain usable provenance or recovery evidence. Plain Snapshot remains a one-root current-state publication; Snapshot release preservation creates new checkpoint commits from selected release states, while FullHistory preserves original Git history and tag targets.

Goals

• Make clean current-state publication the safe, understandable default.
• Provide an explicit history-preserving alternative.
• Bind mutation to reviewed immutable source-state evidence and fail closed on drift.
• Preserve selected GitHub Release states/assets in Snapshot as newly constructed checkpoints without claiming source commit identity or ancestry preservation.
• Preserve selected GitHub Releases and assets in FullHistory without changing ordinary Git tag/commit identity.
• Preserve existing repositories rather than silently overwrite or delete them.
• Make planning, mutation, verification, and recovery behavior observable.
• Support both guided human use and deterministic automation.
• Provide sufficient product, quality, security, and release evidence for a defensible release decision.

Non-goals

• Repository deletion or silent destructive overwrite.
• Reconstructing original commit identity, detailed ancestry, authorship, committer identity, or timestamps in Snapshot release-checkpoint history.
• Copying GitHub historical/operational records such as pull requests, issues, workflow-run history, stars, watchers, forks, or traffic history.
• Migrating secret values, webhooks, deploy keys, environments, collaborator/team access, packages, or deployments.
• Restoring GitHub Pages or enabling GitHub Actions after migration.
• Supporting GitHub Enterprise Server or non-GitHub.com hosts.
• Providing adoption telemetry or usage analytics.
• Promising arbitrary performance or scale SLAs before the non-functional characterization work is complete.

Evidence-based release success criteria

Product success for a release means that the required release capabilities are implemented, documented, automatically tested where practical, have controlled live-validation capability for behaviors that require GitHub, and have actual release-candidate live evidence where the release-readiness process requires it. Safety-critical failure paths must be specified as deliberately as success paths.

release-readiness.md determines whether those conditions are satisfied for one exact release candidate. An E2E harness existing is not the same as that release candidate having been live-validated.

Personas and primary journeys

The seven primary documentation personas are defined in documentation-strategy.md. Their product-facing journeys are summarized here so capabilities can be traced across audiences.

Persona	Primary journey	Product question
User / Operator	Evaluate -> choose mode/scenario -> plan -> execute -> verify -> recover/support	Can I accomplish my repository-copy goal safely and understand what happened?
Contributor / Maintainer	Understand behavior -> change -> validate -> document -> release/support	What product behavior must remain true when I change the implementation?
Quality Engineer	Requirement -> scenario -> automated evidence -> live evidence -> release evidence	How do we know the advertised behavior and failure semantics are protected?
Architect / Engineering Reviewer	Capability -> boundaries/state -> invariants -> design decisions	Does the design preserve the product’s safety and verification model?
Security Reviewer	Threat/trust boundary -> control -> failure behavior -> evidence/residual risk	Can privileged mutation and supply-chain behavior be assessed independently?
Governance / Compliance Reviewer	Scope/dependencies/data/permissions -> assurance evidence -> support	Is the product’s actual operating and distribution posture understandable?
Product / Program Manager	Intent -> capability -> use case -> scenario -> dependency -> readiness/go-no-go	Is the release complete, coherent, evidenced, and deliberately scoped?

Industry Expert remains a cross-cutting quality lens rather than another persona.

Capability catalog

Capability IDs are stable traceability handles. They organize the product; they are not separate implementation components.

ID	Capability	Primary product-contract authority
CAP-DISC	Repository discovery and GitHub authentication boundary	Public command contract; host/release contract
CAP-PLAN	Immutable source-state planning and preview	Immutable approved source state
CAP-SNAP	Snapshot clean publication, including optional release-checkpoint history	Canonical content terminology; Snapshot release-checkpoint contract; verification
CAP-HIST	FullHistory copy	Canonical content terminology; verification
CAP-GHREL	Mode-aware GitHub Release selection, restoration, asset transfer, and verification	GitHub Release preservation; Snapshot release-checkpoint contract; immutable approved source state; verification
CAP-DEST	New-destination and existing-destination safety	Destination and replacement safety
CAP-SAME	Same-name archive-and-replace	Destination and replacement safety
CAP-LFS	Git LFS planning, transfer, and verification	Immutable approved source state; verification
CAP-SET	Supported ordinary repository-settings restoration	Supported repository configuration
CAP-PROT	Transferable repository-protection restoration/skipped semantics	Supported repository configuration
CAP-WIZ	Guided wizard planning/review/execution/cancellation/help	Guided wizard
CAP-AUTO	Deterministic scripted/non-interactive operation	Public command contract; destination safety
CAP-VERIFY	Standalone and execution-integrated verification	Verification
CAP-EVID	Provenance, structured reporting, and recovery evidence	Provenance and recovery
CAP-DIST	Installation/update/uninstall and stable distribution contract	Host/release contract plus installation/versioning authorities
CAP-REL	Release packaging/publication integrity and immutable release boundary	Host and release contract plus versioning/publishing authorities

Use-case catalog

Use-case IDs represent user/program outcomes. A use case may rely on several capabilities and several product-contract requirements.

ID	Actor / goal	Preconditions	Capabilities	Mutation / evidence expectation
UC-DISC-01	Operator discovers/selects an accessible GitHub.com source repository	PowerShell/Git/gh; authenticated GitHub CLI	CAP-DISC	Read-only; repository identity/metadata returned
UC-PLAN-01	Operator previews a Snapshot or FullHistory operation before mutation	Valid source/destination/options	CAP-PLAN, CAP-AUTO	No mutation; immutable approved source evidence and plan returned
UC-SNAP-NEW	Operator publishes current approved source state to a new destination with one unrelated root commit	Fresh destination name; unchanged approved source	CAP-PLAN, CAP-SNAP, CAP-DEST, CAP-LFS, CAP-VERIFY, CAP-EVID	Destination created/published; verification/provenance returned
UC-SNAP-REL	Operator preserves selected release states/assets while keeping Snapshot history unrelated to source history	Snapshot with -IncludeReleases; selected release topology is representable; approved source/release state unchanged	CAP-PLAN, CAP-SNAP, CAP-GHREL, CAP-VERIFY, CAP-EVID	New checkpoint commits/tags represent reviewed release states; releases/assets are recreated and verified without preserving source commit identities
UC-HIST-NEW	Operator copies approved ordinary Git history to a new destination	Fresh destination; unchanged approved source	CAP-PLAN, CAP-HIST, CAP-DEST, CAP-LFS, CAP-VERIFY, CAP-EVID	Destination created; branch/tag/history/LFS verification returned
UC-HIST-REL	Operator preserves selected GitHub Releases and assets during FullHistory migration	FullHistory; selected releases resolve to preserved tags; approved release state unchanged	CAP-PLAN, CAP-HIST, CAP-GHREL, CAP-VERIFY, CAP-EVID	Approved releases/assets are recreated against original preserved tag targets and independently read back
UC-DEST-REPLACE	Operator archives an existing different destination and creates a replacement	Explicit archive-and-replace path and exact confirmation	CAP-PLAN, CAP-DEST, content-mode capability, CAP-VERIFY, CAP-EVID	Existing destination preserved under archive identity before replacement
UC-SAME-REPLACE	Operator republishes under the source’s current name while preserving the original as an archive	Same-name flow; unused archive; exact confirmation	CAP-PLAN, CAP-SAME, content-mode capability, CAP-VERIFY, CAP-EVID	Original source renamed/preserved; replacement receives distinct identity
UC-VIS-01	Operator changes destination visibility deliberately	Valid visibility target; explicit force acknowledgement for mutation	CAP-DEST, CAP-AUTO	Visibility change is explicit, never implicit
UC-SET-01	Operator restores supported ordinary settings after content verification	Content verification succeeded; settings not skipped	CAP-SET, CAP-VERIFY	Supported settings restored differentially and read back
UC-PROT-01	Operator restores transferable protection without weakening semantics	Content/settings phase complete; protection transferable	CAP-PROT, CAP-VERIFY	Transferable protection restored/read back; unsupported policy reported as skipped
UC-WIZ-01	Human operator completes the guided flow	Interactive PowerShell host; authenticated prerequisites	CAP-WIZ, CAP-DISC, CAP-PLAN, relevant execution capabilities	Real plan reviewed; explicit execute decision before mutation
UC-AUTO-01	Automation performs a deterministic non-interactive copy	Complete explicit inputs; required force/confirmation semantics	CAP-AUTO, CAP-PLAN, relevant execution capabilities	Structured result/evidence; no hidden interactive dependency
UC-VERIFY-01	Caller independently verifies a completed migration under the selected mode contract	Required repositories/evidence accessible	CAP-VERIFY	Read-only structured comparison/approved-evidence verification result
UC-RECOVER-01	Operator understands what survived after a post-mutation failure	Mutation started and operation terminated	CAP-EVID, relevant mutation capability	Durable recovery evidence when possible; no automatic delete/rename-back
UC-DIST-01	User installs, updates, or removes the module through a supported distribution path	Appropriate package/release exists for requested path	CAP-DIST	Local module state changes only; trust boundary documented
UC-REL-01	Maintainer publishes an immutable stable release	Exact release candidate has required readiness evidence	CAP-REL, CAP-DIST	Tag/package/release publication follows version/integrity contract

Behavioral scenario taxonomy

Scenario IDs are intentionally concise. user-guide.md and troubleshooting-recovery.md translate them into user-facing scenario and recovery guidance, while quality-strategy.md attaches Unit/Integration/Contract/E2E/live-release evidence.

Scenario categories:

• HAPPY — expected successful outcome.
• VALIDATION — invalid input, unsupported scope, or unmet precondition before mutation.
• AUTH — authentication/authorization/prerequisite failure.
• SAFETY — exact confirmation, identity, stale-state, or destructive-operation guard.
• EDGE — meaningful boundary behavior such as empty repositories or LFS/no-LFS cases.
• PARTIAL — failure after mutation has begun.
• VERIFY — content/settings/protection/release verification failure.
• RECOVERY — preservation/evidence behavior after failure.
• NOOP — -PlanOnly, -WhatIf, cancellation, or rejected execution with no mutation.
• AUTOMATION — non-interactive behavior.
• RESILIENCE — scale, network, rate-limit, timeout, cancellation, retry, interruption, and local-resource behavior.

High-value behavioral scenarios

Planning and stale-state safety

SCN-PLAN-HAPPY-01 — approved plan captures executable source state

Given a supported GitHub.com source and valid options, when planning completes, then the plan records the content-mode-specific immutable approved source evidence required by the product contract, and no GitHub mutation occurs. When GitHub Releases are requested, the plan also records the exact filtered release inventory and tag/asset evidence; Snapshot additionally records immutable checkpoint topology/tree evidence.

Use cases: UC-PLAN-01, UC-SNAP-NEW, UC-SNAP-REL, UC-HIST-NEW, UC-HIST-REL, UC-DEST-REPLACE, UC-SAME-REPLACE.

SCN-PLAN-SAFETY-01 — stale plan fails closed

Given an approved plan whose Git source state changes before the first GitHub mutation, when execution revalidates the source, then execution terminates with the stale-state outcome defined by the product contract, and destination creation/rename does not proceed from that plan.

Mutation expectation: none from the stale plan.

SCN-PLAN-NOOP-01 — plan-only and WhatIf do not mutate

Given otherwise valid mutating inputs, when -PlanOnly or -WhatIf is used, then the operation produces preview/ShouldProcess behavior without creating, renaming, publishing, deleting, restoring releases, or restoring destination resources.

Snapshot publication

SCN-SNAP-HAPPY-01 — new-destination plain Snapshot publication

Given an approved unchanged plain Snapshot plan and unused destination, when execution succeeds, then the approved default-branch tree is published as exactly one unrelated root commit, required Snapshot LFS transfer succeeds, and destination content verification/provenance is returned.

Use case: UC-SNAP-NEW.

SCN-SNAP-VERIFY-01 — plain Snapshot mismatch is not reported as success

Given plain Snapshot publication has occurred but the destination tree/root-commit contract or required LFS verification does not match approved evidence, when verification runs, then the operation does not report successful migration, and recovery/evidence semantics reflect the stage reached.

Mutation expectation: destination may already exist and contain published content.

Snapshot release preservation

SCN-SNAP-REL-HAPPY-01 — selected release states become new Snapshot checkpoints

Given an approved unchanged Snapshot plan with -IncludeReleases, a selected release set whose distinct peeled tag targets form the deterministic topology required by the product contract, and an unused/safely prepared destination, when execution succeeds, then selected release states are represented by newly generated checkpoint commits ordered by source ancestry, selected tags point to those new checkpoints, supported release metadata/assets and selected Latest designation are recreated/verified, and source commit SHAs/detailed ancestry are not claimed to be preserved.

Use case: UC-SNAP-REL.

SCN-SNAP-REL-EDGE-01 — final current-state commit follows state equivalence

Given the latest selected release checkpoint exists, when reviewed source HEAD is state-equivalent to that release state, then no extra current-state commit is created; when reviewed HEAD differs and the topology permits progression to HEAD, then exactly one final current-state Snapshot commit is created.

Use case: UC-SNAP-REL.

SCN-SNAP-REL-SAFETY-01 — divergent or stale release evidence fails closed

Given selected distinct release targets cannot be totally ordered by ancestry, the latest selected line cannot safely progress to reviewed HEAD, or selected release/tag/tree evidence drifts after planning, when planning/execution reaches the applicable boundary, then Snapshot release preservation terminates instead of inventing an order or silently accepting live replacement evidence.

Use case: UC-SNAP-REL.

SCN-SNAP-REL-VERIFY-01 — checkpoint and release verification uses reviewed evidence

Given Snapshot release preservation completed, when execution-integrated or standalone approved-plan verification runs, then generated checkpoint sequence/parentage, checkpoint tree equivalence, selected tag targets, final reviewed HEAD state, supported release metadata/assets, and selected Latest designation must match immutable reviewed evidence or verification is unsuccessful.

Use cases: UC-SNAP-REL, UC-VERIFY-01.

SCN-SNAP-REL-PARTIAL-01 — partial checkpoint/release mutation preserves recovery evidence

Given Snapshot release execution has begun and a later checkpoint/tag/release/settings/protection stage terminates, when recovery handling runs, then already-created destination state is not automatically deleted and available checkpoint/tag/release evidence plus the failure stage are retained for diagnosis.

Use cases: UC-SNAP-REL, UC-RECOVER-01.

FullHistory copy

SCN-HIST-HAPPY-01 — new-destination FullHistory copy

Given an approved unchanged FullHistory plan and unused destination, when execution succeeds, then approved ordinary branches/tags/reachable history/default branch and reachable required LFS objects are preserved and verified according to the product contract.

Use case: UC-HIST-NEW.

SCN-HIST-VERIFY-01 — missing/mismatched history is a verification failure

Given FullHistory publication has occurred, when branch/tag targets, reachable commit count, branch-tip trees, default branch, or required LFS evidence does not match the approved state, then the copy is not reported as verified success.

GitHub Releases in FullHistory

SCN-GHREL-HAPPY-01 — approved releases are restored against preserved FullHistory tags

Given an approved FullHistory plan with -IncludeReleases, unchanged selected release evidence, and destination tags resolving to the approved original commit SHAs, when content verification succeeds, then the approved GitHub Releases and assets are recreated and read back before settings/protection restoration completes. If the selected set contains the source Latest full release, that designation is preserved and verified.

Use case: UC-HIST-REL.

SCN-GHREL-SAFETY-01 — FullHistory release restoration fails closed on unsafe state

Given a selected source release changes or disappears after planning, a destination tag resolves to a different original commit, or the destination already contains a GitHub Release for the approved tag, when release restoration reaches that boundary, then the operation terminates rather than substituting live metadata, attaching a release to the wrong commit, or overwriting the existing destination release.

Use case: UC-HIST-REL.

SCN-GHREL-VERIFY-01 — FullHistory release metadata and assets are independently verifiable

Given selected FullHistory releases were restored, when execution-integrated or standalone release verification runs, then supported release metadata, original tag commit identity, asset evidence, and the selected Latest designation must match the applicable approved/current source evidence or the verification result is unsuccessful.

Use cases: UC-HIST-REL, UC-VERIFY-01.

SCN-GHREL-PARTIAL-01 — partial FullHistory release restoration preserves recovery evidence

Given FullHistory verification succeeded and release restoration then terminates after mutation may have begun, when recovery handling runs, then already-restored releases are not automatically deleted and recovery evidence records the release failure stage, approved release selection, and available restoration state.

Use cases: UC-HIST-REL, UC-RECOVER-01.

Destination preservation and replacement

SCN-DEST-VALIDATION-01 — existing destination is not silently overwritten

Given a different destination already exists, when the operator has not selected the explicit archive-and-replace flow, then execution rejects the destination before destructive replacement behavior.

Mutation expectation: existing destination remains unchanged by replacement behavior.

SCN-DEST-SAFETY-01 — exact replacement confirmation cannot be bypassed

Given an archive-and-replace operation, when exact case-sensitive confirmation is absent or incorrect, then replacement does not proceed; neither -Force nor -Confirm:$false bypasses the exact confirmation contract.

SCN-DEST-HAPPY-01 — existing destination is archived before replacement

Given an approved unchanged source plan, existing destination, unused archive name, and valid exact confirmation, when replacement executes, then the existing destination is renamed to the archive, archive identity continuity is verified, and only then is the replacement created.

Use case: UC-DEST-REPLACE.

SCN-DEST-PARTIAL-01 — archive succeeds but later replacement fails

Given the existing destination was successfully archived and a later replacement stage fails, when the operation terminates, then the archived destination is preserved, recovery evidence identifies completed/failed stages and known identities, and the tool does not automatically rename back or delete repositories.

Same-name replacement

SCN-SAME-HAPPY-01 — original identity is preserved under archive name

Given a same-name operation with valid exact confirmation and unchanged approved source state, when execution proceeds, then the original repository is archived, archive identity continuity is verified against the approved source identity where available, and the replacement created under the original name receives a distinct immutable repository identity.

Use case: UC-SAME-REPLACE.

SCN-SAME-SAFETY-01 — source/archive identity mismatch fails closed

Given the source/archive identity cannot be shown to be the preserved approved repository where immutable identity evidence is available, when the same-name flow reaches that safety boundary, then replacement publication does not continue as successful.

Git LFS

SCN-LFS-HAPPY-01 — required LFS content is available and transferred

Given approved source evidence identifies required LFS content for the selected mode, when publication and verification succeed, then required reachable LFS objects are available at the destination according to that mode’s contract.

SCN-LFS-VALIDATION-01 — unavailable required LFS content blocks false success

Given required source LFS objects cannot be shown available/transferred as required, when planning/execution/verification reaches the applicable boundary, then the operation does not claim successful verified publication.

Settings and protection

SCN-SET-HAPPY-01 — ordinary settings follow content and requested release verification

Given destination content and any requested release restoration have verified successfully and settings restoration is enabled, when ordinary settings restoration runs, then supported settings are restored differentially and read back for verification.

Use case: UC-SET-01.

SCN-SET-PARTIAL-01 — settings failure preserves verified content

Given content/requested-release verification succeeded and a later settings restoration/readback step fails, when the operation terminates, then the verified destination state is not automatically deleted or rolled back, and recovery evidence identifies the failure stage.

SCN-PROT-HAPPY-01 — transferable protection is restored last

Given prior applicable stages succeeded, when protection restoration runs, then transferable repository-level rulesets/default-branch protection are restored/read back after ordinary settings, without weakening security semantics for portability.

SCN-PROT-EDGE-01 — non-transferable protection is explicitly skipped/unsupported

Given a protection rule is identity-, deployment-, integration-, or organization-policy-bound and cannot be reproduced safely, when restoration evaluates it, then it is reported as skipped/unsupported rather than silently weakened or represented as restored.

Wizard and cancellation

SCN-WIZ-HAPPY-01 — wizard executes the reviewed plan

Given the operator completes guided selections and reviews the real plan produced by Copy-GitHubRepository -PlanOnly, when the operator chooses Execute and source state remains valid, then the wizard applies that reviewed plan through the shared execution boundary rather than reconstructing an equivalent command from presentation state. Snapshot operators can opt into the same release-selection parameters that feed the deterministic checkpoint plan.

Use case: UC-WIZ-01.

SCN-WIZ-NOOP-01 — cancellation before mutation changes nothing

Given the wizard is still before the mutation boundary, when the operator cancels, then cancellation is a structured no-change outcome.

SCN-WIZ-SAFETY-01 — stale reviewed plan returns to review

Given the source changes after wizard plan review but before mutation, when execution detects the stale plan, then the wizard explains the stale state, regenerates/requires review of new planned state, and does not execute the stale plan.

Automation and prerequisite failures

SCN-AUTO-AUTOMATION-01 — non-interactive mutation is explicit

Given automation requests mutation without the required non-interactive acknowledgement/force semantics, when execution validates authority, then it fails rather than prompting unpredictably or mutating implicitly.

Use case: UC-AUTO-01.

SCN-DISC-AUTH-01 — authentication/prerequisite failure occurs before mutation

Given GitHub CLI authentication or a required native prerequisite is unavailable for the requested operation, when the product performs discovery/preflight, then it returns an actionable failure before repository mutation begins.

SCN-HOST-VALIDATION-01 — unsupported host fails closed

Given a repository host other than github.com, when an operation is requested, then the operation fails closed before mutation.

Verification, provenance, and recovery

SCN-VERIFY-HAPPY-01 — standalone verification is read-only

Given the required source/destination repositories and mode-specific evidence, when Test-GitHubRepositoryMigration is invoked, then it returns structured verification results without mutation. Snapshot release verification consumes the immutable approved migration plan rather than rerunning live release filters/topology discovery; FullHistory release verification may use the same release-selection filters for current source-versus-destination comparison.

Use case: UC-VERIFY-01.

SCN-EVID-HAPPY-01 — successful Snapshot provides external provenance

Given Snapshot intentionally severs Git ancestry, when execution succeeds, then the result exposes approved source state, actual copied evidence, generated destination commit/tree identities, relevant repository identities, time, and verification outcome outside the clean destination Git graph. When releases are requested, provenance also records reviewed/generated checkpoint, recreated tag, release, and asset evidence.

SCN-RECOVER-RECOVERY-01 — post-mutation failure retains recovery information

Given a terminating failure occurs after mutation begins, when recovery handling runs, then it records the failure stage, completed steps, known original/archive/replacement identities, and available planned-versus-copied content/release/checkpoint evidence when possible, without automatically deleting or renaming repositories/releases/tags back.

Use case: UC-RECOVER-01.

Resilience scenarios

The following scenarios are canonical SCN-* product scenarios. They replace the earlier separate resilience inventory as the traceability authority. Detailed limits and operational wording remain in non-functional-requirements.md, github-api-retry-policy.md, retry-idempotency.md, scale-characterization.md, and interruption-signal-handling.md.

Scenario	Observable behavior	Mutation boundary	Retained evidence	Safe retry / recovery	Automated / live evidence
SCN-API-RESILIENCE-01 — transient GitHub API read failure	Recognized side-effect-free read failures use bounded retry/backoff; non-transient failures fail clearly; mutation calls are not automatically replayed	Read-only adapter activity; no new mutation from the retry mechanism	Final error plus bounded-attempt diagnostics; normal response on eventual success	Safe automatic retry is limited to recognized reads; ambiguous mutation failures require state inspection	GitHubApiAdapters.Tests.ps1; cross-platform Quality Gate; live service degradation is not a deterministic release assertion
SCN-NATIVE-RESILIENCE-01 — native timeout or controlled cancellation	Explicit timeout/cancellation produces distinct terminating errors, preserves captured streams, and makes a best-effort child-process-tree termination	May occur before or after a Git/Git LFS/gh operation has produced side effects	Captured stdout/stderr and timeout/cancellation diagnostics; normal orchestration recovery evidence when post-mutation catch paths execute	Never infer rollback from process termination; inspect GitHub state before retry after ambiguous mutation	NativeCommandStreams.Tests.ps1; cross-platform Quality Gate
SCN-RESOURCE-RESILIENCE-01 — insufficient local disk/temp capacity	Defensible insufficiency fails before mutation; uncertain estimates are reported conservatively rather than inventing an exact universal size multiplier	Intended blocking point is pre-mutation local preflight; later filesystem exhaustion remains possible	Resource-preflight evidence and normal post-mutation recovery evidence if a later resource failure occurs	Free/select adequate local capacity and create/review a fresh plan after pre-mutation failure; inspect state first after mutation	LocalResourcePreflight.Tests.ps1; scale characterization workflow/live evidence informs the estimate, not an SLA
SCN-RETRY-RESILIENCE-01 — retry after pre-mutation failure	Corrected prerequisite/authentication/preflight/stale-state failure can be retried from a fresh reviewed plan without inheriting mutation state	Before first GitHub mutation	Original failure plus newly captured plan/source evidence	Re-plan after the cause is corrected; normal validation/confirmation still applies	RetryIdempotency.Tests.ps1 and prerequisite/stale-state suites; cross-platform Quality Gate
SCN-RETRY-RESILIENCE-02 — retry after partial mutation	Repeated invocation never silently reuses/overwrites archive or replacement identities and must classify existing state before proceeding	After create/archive/publish/release/settings/protection mutation	Recovery report where available, completed stages, repository identities, current GitHub state	No blind replay; inspect evidence/state and follow stage-specific recovery guidance	RetryIdempotency.Tests.ps1 plus existing recovery/replacement suites; live recovery harness where remote identity behavior matters
SCN-SCALE-RESILIENCE-01 — pagination and larger repository/resource dimensions	Contract-required pagination remains complete; characterized larger history/ref/content/LFS fixtures complete or fail explicitly without becoming unsupported hard limits or SLAs	Read/planning/copy stages depending on dimension; characterization itself does not weaken mutation guards	Automated pagination assertions, characterization measurements, environment/tool versions	Correct cause and retry only under normal mutation/recovery rules; scale measurements do not grant blind replay	SnapshotPagination.Tests.ps1, scale-characterization workflow, documented local/live characterization evidence
SCN-INTERRUPT-RESILIENCE-01 — Ctrl+C or process/session interruption	Explicit cancellation is normalized; raw Ctrl+C and hard termination are host/OS dependent and never imply rollback	Before mutation: no copy mutation expected; after mutation: state is ambiguous until inspected	Recovery report is attempted only when PowerShell remains capable; absence of a file is not evidence of no mutation	Fresh plan/retry is acceptable before mutation; after mutation inspect repository names/identities/content/releases/settings/protection before retry	InterruptionContract.Tests.ps1, NativeCommandStreams.Tests.ps1; cross-platform Quality Gate; raw signal delivery is not synthesized as a portable blocking assertion

These scenarios deliberately distinguish deterministic product guarantees from characterization or external-platform behavior. A measured result is not automatically a supported maximum, SLA, or rollback guarantee.

Distribution and release

SCN-DIST-VALIDATION-01 — stable installation is not implied before publication

Given the requested stable version/channel has not actually been published, when documentation or installation guidance is evaluated, then it must not claim that stable installation is currently available.

SCN-REL-SAFETY-01 — stable publication is tied to exact release state

Given a stable release is being published, when release validation executes, then the tag/version/exact tagged commit and required release evidence must satisfy the release contract before immutable publication proceeds.

Detailed release readiness and execution are owned by release-readiness.md and release-runbook.md rather than duplicated here.

Scenario coverage expectations

The scenario catalog is intentionally risk-based rather than combinatorial. A high-risk use case is not complete merely because its happy path exists. Applicable failure categories must be represented, especially when they answer one of these questions:

• Can mutation have started?
• What existing resource must be preserved?
• What identity/state invariant prevents the wrong repository from being changed?
• What verification proves success?
• What evidence remains after failure?
• Is retry safe, or does the operator need recovery guidance first?

Resilience scenarios use the same canonical SCN-* traceability model as functional scenarios. They must identify observable behavior, mutation boundary, retained evidence, safe retry/recovery semantics, and automated/live evidence where appropriate rather than living in a disconnected taxonomy.

Relationship to automated and live evidence

This document does not claim a particular test currently proves every scenario. quality-strategy.md owns the formal requirement/scenario-to-test/evidence mapping.

For each SCN-*, the quality strategy should record as applicable:

• Unit test evidence;
• Integration test evidence;
• Contract test evidence;
• controlled E2E harness capability;
• actual live-validation evidence for the exact release candidate;
• known coverage gaps or accepted limitations.

This distinction prevents implemented, automatically tested, E2E-capable, and live-validated from becoming interchangeable claims.

ID maintenance rules

• CAP-* identifies a durable product capability.
• UC-* identifies a durable user/program outcome.
• SCN-* identifies one externally meaningful behavioral scenario.
• Prefer adding a new ID when materially different behavior is introduced rather than silently changing the meaning of an existing published ID.
• Do not assign IDs to every implementation detail or individual test case.
• Tests and evidence may map many-to-many to scenarios.
• User documentation may summarize scenarios in natural language while linking back here when traceability matters.

Downstream use

• user-guide.md reuses the capability/use-case catalog for user-facing getting-started and scenario guidance.
• troubleshooting-recovery.md reuses failure, partial-mutation, verification, recovery, retry, resource, and interruption scenarios for troubleshooting/recovery documentation.
• quality-strategy.md maps scenario IDs to automated and live evidence.
• release-readiness.md uses capability/scenario IDs for release scope/readiness rather than inventing a competing taxonomy.
• non-functional-requirements.md and its focused authorities define detailed resilience limits while reusing the canonical scenario IDs here.