feat: E2E #2 (Stash) gap remediation + S6 hardening

Closes the gaps and the one security finding from the second end-to-end
CLI test (E2E_STASH_REPORT.md), plus the H1 boot-regression found while
re-reviewing those fixes.

Security
- S6: reserved-path validation (`check_reserved`) now case-folds before
  comparing, so `/API/v2/x`, `/HEALTHZ`, `/Admin/x` are rejected like
  their lowercase forms. Request-time matching stays case-sensitive.
- S10: "public route != public data" callout in sdk-shape.md (script_gate
  skips authz when the principal is anonymous).

Observability / features
- G1: trigger executions now write `execution_logs`. Migration 0043 adds
  a `source` column (CHECK mirrors ExecutionSource/OutboxSourceKind,
  DEFAULT 'http' backfills history); a shared `build_execution_log` helper
  in executor-core; dispatcher logging for outbox triggers + queue
  consumers (skips sync-HTTP rows the orchestrator already logs). `pic
  logs` gains a source column + `--source` filter.
- G5: dev-only in-memory email capture under PICLOUD_DEV_MODE with no SMTP
  (email::send succeeds locally), readable at GET /api/v1/admin/dev/emails
  (Owner/Admin only; route mounted only in capture mode).
- G6: generalized the Rhai in-place-mutation footgun note (trim/replace/
  make_upper/make_lower/crop/truncate/pad return ()).
- G2/G3/G4 (CLI): `pic members`, `pic files`, `pic queues`, read-only
  `pic kv` (+ new kv_api.rs); `pic deploy --timeout/--memory/--kind/
  --sandbox`; first-class `pic triggers create-{docs,files,pubsub,queue,
  email}` wrappers. All new client path segments percent-encoded via seg().

H1 regression fix (found in re-review)
- The S6 change also runs in `compile_routes`, which compiles every stored
  route at boot and on each route CRUD. A single stored route the new
  validation rejects (creatable while the S6 gap existed) made the whole
  compile Err and aborted startup. `compile_routes` is now lenient: it
  skips an un-compilable row with a warning instead of bricking boot
  (route creation still validates separately). Migration 0044 sweeps
  pre-existing reserved-path routes on upgrade (WHERE mirrors
  check_reserved exactly). Added regression tests for both.

Verified: cargo fmt, clippy --all-targets --all-features -D warnings, the
schema_snapshot test, and the new S6/lenient-compile unit tests all pass;
boot-resilience and G1/G5 confirmed live.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

crates/manager-core/src/lib.rs

@@ -33,6 +33,7 @@ pub mod cron_scheduler;
 pub mod dead_letter_repo;
 pub mod dead_letter_service;
 pub mod dead_letters_api;
+pub mod dev_email_api;
 pub mod dispatcher;
 pub mod docs_filter;
 pub mod docs_repo;
@@ -46,6 +47,7 @@ pub mod files_sweep;
 pub mod gc;
 pub mod http_service;
 pub mod invoke_service;
+pub mod kv_api;
 pub mod kv_repo;
 pub mod kv_service;
 pub mod log_sink;
@@ -143,6 +145,7 @@ pub use dead_letter_repo::{
 };
 pub use dead_letter_service::PostgresDeadLetterService;
 pub use dead_letters_api::{dead_letters_router, DeadLettersApiError, DeadLettersState};
+pub use dev_email_api::{dev_emails_router, DevEmailState};
 pub use dispatcher::{compute_backoff, Dispatcher, DispatcherError};
 pub use docs_repo::{DocsRepo, DocsRepoError, PostgresDocsRepo};
 pub use docs_service::DocsServiceImpl;
@@ -150,8 +153,8 @@ pub use email_inbound_api::{
     email_inbound_router, EmailInboundError, EmailInboundState, InboundNonceDedup,
 };
 pub use email_service::{
-    EmailConfig, EmailServiceImpl, EmailTransport, LettreEmailTransport, SmtpConfig, SmtpTls,
-    DEFAULT_EMAIL_MAX_MESSAGE_BYTES,
+    CapturedEmail, DevEmailSink, DevEmailTransport, EmailConfig, EmailServiceImpl, EmailTransport,
+    LettreEmailTransport, SmtpConfig, SmtpTls, DEFAULT_EMAIL_MAX_MESSAGE_BYTES,
 };
 pub use files_api::{files_admin_router, FilesAdminState};
 pub use files_repo::{FilesConfig, FilesRepo, FilesRepoError, FsFilesRepo};
@@ -159,6 +162,7 @@ pub use files_service::FilesServiceImpl;
 pub use files_sweep::{spawn_files_orphan_sweep, sweep_orphan_tmp_files, SweepStats};
 pub use gc::{spawn_abandoned_gc, spawn_app_user_token_gc, spawn_dead_letter_gc};
 pub use http_service::{HttpConfig, HttpServiceImpl};
+pub use kv_api::{kv_admin_router, KvAdminState};
 pub use kv_repo::{KvRepo, KvRepoError, PostgresKvRepo};
 pub use kv_service::KvServiceImpl;
 pub use log_sink::PostgresExecutionLogSink;