Complete s9 + aa: NewServerWithLogger returns error; share-page renderer extracted

Two related refactors that converged on internal/api/server.go.

s9 — NewServerWithLogger no longer panics on nil deps.Config. Returns
(*Server, error) so cmd/player/main.go can log a clear message and exit
cleanly when wiring is misconfigured. All callers updated, including
api unit tests that construct a Server directly.

aa — Share-page HTML rendering moved out of handlers_share.go into a
new internal/web package. internal/web/sharepage.go owns
SharePageRenderer and the private injectShareMedia helper; the api
handler now calls s.shareRenderer.Render(...) and routes errors via
http.Error. injectShareMedia coverage was moved alongside it in
internal/web/sharepage_test.go; the duplicate tests in
handlers_more_test.go were removed (placeholder comment left so the
reference is greppable). Server gained one new field (shareRenderer
*web.SharePageRenderer) and one new constructor line; production
wiring uses deps.StaticFS.

Background: both tasks were initially worked by separate sub-agents
that stopped mid-edit when usage limits hit; their WIP was preserved
in a stash and finalized in this commit. Tests rerun from a clean
state: full Go unit suite green, 25/25 LLM e2e, 22/22 Playwright.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

0 files changed, 0 insertions, 0 deletions