ssBartik 0.1.1

First release. An end-to-end toolkit for shift-share (Bartik) instrumental variables, spanning both identification routes (exogenous shares and exogenous shocks) from instrument construction through estimation, inference, and credibility diagnostics.

• Estimation: ssb_design(), ssbartik(), and ssb_estimate(), reporting a panel of confidence intervals (IID, EHW, and exposure-robust AKM / AKM0 by default; cluster and two-way available on request).
• Rotemberg / GPSS diagnostics: ssb_rotemberg(), ssb_weight_summary(), ssb_loo(), ssb_drop_top().
• Shock-level (Borusyak-Hull-Jaravel) tools: ssb_aggregate(), ssb_shock_iv(), ssb_equivalence(), ssb_recenter().
• Credibility checks: ssb_first_stage(), ssb_overid(), ssb_share_balance(), ssb_shock_balance(), ssb_pretrend(), ssb_placebo(), ssb_ri().
• Output: autoplot() / ssb_plot_*() figures (including the ssb_plot_ci() interval comparison), and paste-ready tables via format(x, "latex" / "markdown") and a rendered plot() for the Rotemberg table.