🧰🧩🎨: reconciliation follow-ups and workspace component editing - #1842

Resolve coalesced scalar targets from the current editable, and build replay
callbacks outside planning scopes that retain committed target maps.
Use the foundation notification hooks when compensating rejected component
edits; keep ordinary delivery order and one visible rejection.

The morphic boundary tests characterize S5 notification semantics.

Evaluate planned parent and derived policies to synthesize an introduced
subtree when copying the base cannot represent its local overrides. Keep
plain introductions on the existing copy path and connect synthesized
inline policies to the atomic cache transaction for subsequent edits.

Retain activated-override templates for closed sessions and rebind replay
to the current editable by name path. Preserve atomic rejection, prior
history, exact source undo/redo and tooling removal of derived overrides.

Keep resolved binding specifiers across validated edits inside a component
body, preserving source identity checks and invalidation on saved source
or inserted imports. Discard the old import AST and retain full projection
and semantic validation.

Cover lookup reuse, import insertion and saved-specifier invalidation with
real edit sessions, cold instances and exact source/runtime undo and redo.

Remove tracker-owned undo and redo entries connected by whole-module
source preconditions when a component editing session closes. Follow
transitive derived-module plans before pruning, and preserve unrelated
history within composite groups and active recorders.

Keep current source, live and policy state unchanged. Show a status message
when dependent history from another component session is removed instead
of leaving a stale, throwing undo or redo.

Cover same-module undo/redo conflicts, interleaving, mixed and active groups,
independent modules, unedited-session controls and derived dependencies.

Reuse component edit controls in local workspaces and protect active
top-level declarations with anchored ranges in workspace and browser
editors. Keep surrounding code editable, synchronize matching source
editors, and prune component history invalidated by manual source edits.

Preflight whole-value text edits and typed undo/redo before mutation,
while preserving atomic compensation. Keep generated source out of the
editor's independent text history and preserve trailing newlines when a
multiline replacement extends the document.

Release source guards and controls on close, removal and reevaluation;
exclude runtime session state from copied editors. Cover the existing
descriptor API, workspace UI entry points, source/runtime replay, text
guards and lifecycle regressions.

Refs #1121.